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3131132133120 = 28356343128551
BaseRepresentation
bin101101100100000110000…
…001001011111100000000
3102002022222222111211202020
4231210012001023330000
5402300024311224440
610354231112121440
7442134241666065
oct55440601137400
912068888454666
103131132133120
11aa79a6508212
12426a01996280
13199359126294
14ab7948a6c6c
15566abb893d0
hex2d90604bf00

3131132133120 has 144 divisors (see below), whose sum is σ = 10001707602432. Its totient is φ = 834830438400.

The previous prime is 3131132133113. The next prime is 3131132133163. The reversal of 3131132133120 is 213312311313.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24292845 + ... + 24421395.

Almost surely, 23131132133120 is an apocalyptic number.

3131132133120 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3131132133120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5000853801216).

3131132133120 is an abundant number, since it is smaller than the sum of its proper divisors (6870575469312).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3131132133120 is a wasteful number, since it uses less digits than its factorization.

3131132133120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134918 (or 134904 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 24.

Adding to 3131132133120 its reverse (213312311313), we get a palindrome (3344444444433).

The spelling of 3131132133120 in words is "three trillion, one hundred thirty-one billion, one hundred thirty-two million, one hundred thirty-three thousand, one hundred twenty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 48 60 64 80 96 120 128 160 192 240 256 320 384 480 640 768 960 1280 1920 3840 6343 12686 19029 25372 31715 38058 50744 63430 76116 95145 101488 126860 128551 152232 190290 202976 253720 257102 304464 380580 385653 405952 507440 514204 608928 642755 761160 771306 811904 1014880 1028408 1217856 1285510 1522320 1542612 1623808 1928265 2029760 2056816 2435712 2571020 3044640 3085224 3856530 4059520 4113632 4871424 5142040 6089280 6170448 7713060 8119040 8227264 10284080 12178560 12340896 15426120 16454528 20568160 24357120 24681792 30852240 32909056 41136320 49363584 61704480 82272640 98727168 123408960 164545280 246817920 493635840 815398993 1630797986 2446196979 3261595972 4076994965 4892393958 6523191944 8153989930 9784787916 12230984895 13046383888 16307979860 19569575832 24461969790 26092767776 32615959720 39139151664 48923939580 52185535552 65231919440 78278303328 97847879160 104371071104 130463838880 156556606656 195695758320 208742142208 260927677760 313113213312 391391516640 521855355520 626226426624 782783033280 1043710711040 1565566066560 3131132133120