131507634318 has 16 divisors (see below), whose sum is σ = 263019287376. Its totient is φ = 43835208320.

The previous prime is 131507634317. The next prime is 131507634337. The reversal of 131507634318 is 813436705131.

It is a super-2 number, since 2×131507634318² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 131507634318.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131507634317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 412438 + ... + 658118.

It is an arithmetic number, because the mean of its divisors is an integer number (16438705461).

Almost surely, 2^131507634318 is an apocalyptic number.

131507634318 is an abundant number, since it is smaller than the sum of its proper divisors (131511653058).

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

131507634318 is a wasteful number, since it uses less digits than its factorization.

131507634318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334899.

The product of its (nonzero) digits is 181440, while the sum is 42.

The spelling of 131507634318 in words is "one hundred thirty-one billion, five hundred seven million, six hundred thirty-four thousand, three hundred eighteen".