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13012331120 = 245162654139
BaseRepresentation
bin11000001111001100…
…00110101001110000
31020120211222220120122
430013212012221300
5203122124043440
65551111225412
7640312663265
oct140746065160
936524886518
1013012331120
115578137a68
122631978268
1312c4acb619
148b625926c
1551258a7b5
hex307986a70

13012331120 has 20 divisors (see below), whose sum is σ = 30253670040. Its totient is φ = 5204932416.

The previous prime is 13012331119. The next prime is 13012331147. The reversal of 13012331120 is 2113321031.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×130123311202 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81326990 + ... + 81327149.

It is an arithmetic number, because the mean of its divisors is an integer number (1512683502).

Almost surely, 213012331120 is an apocalyptic number.

13012331120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13012331120 is an abundant number, since it is smaller than the sum of its proper divisors (17241338920).

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

13012331120 is a wasteful number, since it uses less digits than its factorization.

13012331120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162654152 (or 162654146 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 13012331120 its reverse (2113321031), we get a palindrome (15125652151).

The spelling of 13012331120 in words is "thirteen billion, twelve million, three hundred thirty-one thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 16 20 40 80 162654139 325308278 650616556 813270695 1301233112 1626541390 2602466224 3253082780 6506165560 13012331120