131507313758 has 4 divisors (see below), whose sum is σ = 197260970640. Its totient is φ = 65753656878.

The previous prime is 131507313757. The next prime is 131507313787. The reversal of 131507313758 is 857313705131.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131507313757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32876828438 + ... + 32876828441.

It is an arithmetic number, because the mean of its divisors is an integer number (49315242660).

Almost surely, 2^131507313758 is an apocalyptic number.

131507313758 is a deficient number, since it is larger than the sum of its proper divisors (65753656882).

131507313758 is an equidigital number, since it uses as much as digits as its factorization.

131507313758 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65753656881.

The product of its (nonzero) digits is 264600, while the sum is 44.

The spelling of 131507313758 in words is "one hundred thirty-one billion, five hundred seven million, three hundred thirteen thousand, seven hundred fifty-eight".