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13031442132 = 2234160144071
BaseRepresentation
bin11000010001011110…
…00000011011010100
31020122011221211221220
430020233000123110
5203142022122012
65553033010340
7640634300442
oct141057003324
936564854856
1013031442132
115587a00395
1226382539b0
1312c8a60207
148b89d1b92
155140b308c
hex308bc06d4

13031442132 has 48 divisors (see below), whose sum is σ = 31200860544. Its totient is φ = 4230720000.

The previous prime is 13031442113. The next prime is 13031442133. The reversal of 13031442132 is 23124413031.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13031442133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 273657 + ... + 317727.

It is an arithmetic number, because the mean of its divisors is an integer number (650017928).

Almost surely, 213031442132 is an apocalyptic number.

13031442132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13031442132 is an abundant number, since it is smaller than the sum of its proper divisors (18169418412).

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

13031442132 is a wasteful number, since it uses less digits than its factorization.

13031442132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44720 (or 44718 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 13031442132 its reverse (23124413031), we get a palindrome (36155855163).

The spelling of 13031442132 in words is "thirteen billion, thirty-one million, four hundred forty-two thousand, one hundred thirty-two".

Divisors: 1 2 3 4 6 12 41 82 123 164 246 492 601 1202 1803 2404 3606 7212 24641 44071 49282 73923 88142 98564 132213 147846 176284 264426 295692 528852 1806911 3613822 5420733 7227644 10841466 21682932 26486671 52973342 79460013 105946684 158920026 317840052 1085953511 2171907022 3257860533 4343814044 6515721066 13031442132