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13030231020 = 22356710730293
BaseRepresentation
bin11000010001010100…
…11000101111101100
31020122002200022121220
430020222120233230
5203141214343040
65552551023340
7640621064502
oct141052305754
936562608556
1013030231020
115587253474
12263796ab50
1312c8727b91
148b8798672
15513e242d0
hex308a98bec

13030231020 has 96 divisors (see below), whose sum is σ = 37376494848. Its totient is φ = 3390765312.

The previous prime is 13030231013. The next prime is 13030231057. The reversal of 13030231020 is 2013203031.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 414994 + ... + 445286.

It is an arithmetic number, because the mean of its divisors is an integer number (389338488).

Almost surely, 213030231020 is an apocalyptic number.

13030231020 is a gapful number since it is divisible by the number (10) 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 13030231020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18688247424).

13030231020 is an abundant number, since it is smaller than the sum of its proper divisors (24346263828).

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

13030231020 is a wasteful number, since it uses less digits than its factorization.

13030231020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30479 (or 30477 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 13030231020 its reverse (2013203031), we get a palindrome (15043434051).

The spelling of 13030231020 in words is "thirteen billion, thirty million, two hundred thirty-one thousand, twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 67 107 134 201 214 268 321 335 402 428 535 642 670 804 1005 1070 1284 1340 1605 2010 2140 3210 4020 6420 7169 14338 21507 28676 30293 35845 43014 60586 71690 86028 90879 107535 121172 143380 151465 181758 215070 302930 363516 430140 454395 605860 908790 1817580 2029631 3241351 4059262 6088893 6482702 8118524 9724053 10148155 12177786 12965404 16206755 19448106 20296310 24355572 30444465 32413510 38896212 40592620 48620265 60888930 64827020 97240530 121777860 194481060 217170517 434341034 651511551 868682068 1085852585 1303023102 2171705170 2606046204 3257557755 4343410340 6515115510 13030231020