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31001032132 = 2272943378803
BaseRepresentation
bin11100110111110011…
…100011010111000100
32222000111220121022021
4130313303203113010
51001442231012012
622124111412524
72145143265610
oct346763432704
988014817267
1031001032132
1112169302314
126012224144
132c008a3cc5
141701384340
15c16961007
hex737ce35c4

31001032132 has 48 divisors (see below), whose sum is σ = 64162143360. Its totient is φ = 12823598592.

The previous prime is 31001032109. The next prime is 31001032177. The reversal of 31001032132 is 23123010013.

It is a super-2 number, since 2×310010321322 (a number of 22 digits) contains 22 as substring.

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, 3517243 + ... + 3526045.

It is an arithmetic number, because the mean of its divisors is an integer number (1336711320).

Almost surely, 231001032132 is an apocalyptic number.

It is an amenable number.

31001032132 is an abundant number, since it is smaller than the sum of its proper divisors (33161111228).

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

31001032132 is a wasteful number, since it uses less digits than its factorization.

31001032132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13180 (or 13178 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 31001032132 its reverse (23123010013), we get a palindrome (54124042145).

The spelling of 31001032132 in words is "thirty-one billion, one million, thirty-two thousand, one hundred thirty-two".

Divisors: 1 2 4 7 14 28 29 58 116 203 406 812 4337 8674 8803 17348 17606 30359 35212 60718 61621 121436 123242 125773 246484 251546 255287 503092 510574 880411 1021148 1760822 1787009 3521644 3574018 7148036 38178611 76357222 152714444 267250277 534500554 1069001108 1107179719 2214359438 4428718876 7750258033 15500516066 31001032132