131512740345 has 32 divisors (see below), whose sum is σ = 267200490240. Its totient is φ = 60120109440.

The previous prime is 131512740329. The next prime is 131512740347. The reversal of 131512740345 is 543047215131.

131512740345 is a `hidden beast` number, since 1 + 31 + 512 + 74 + 0 + 3 + 45 = 666.

It is not a de Polignac number, because 131512740345 - 2⁴ = 131512740329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131512740347) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 69582516 + ... + 69584405.

It is an arithmetic number, because the mean of its divisors is an integer number (8350015320).

Almost surely, 2^131512740345 is an apocalyptic number.

131512740345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131512740345 is an abundant number, since it is smaller than the sum of its proper divisors (135687749895).

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

131512740345 is a wasteful number, since it uses less digits than its factorization.

131512740345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139166942 (or 139166936 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

Adding to 131512740345 its reverse (543047215131), we get a palindrome (674559955476).

The spelling of 131512740345 in words is "one hundred thirty-one billion, five hundred twelve million, seven hundred forty thousand, three hundred forty-five".