231736790131 has 16 divisors (see below), whose sum is σ = 288980144640. Its totient is φ = 180535654080.

The previous prime is 231736790123. The next prime is 231736790149. The reversal of 231736790131 is 131097637132.

It is a cyclic number.

It is not a de Polignac number, because 231736790131 - 2³ = 231736790123 is a prime.

It is a super-2 number, since 2×231736790131² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231736791131) 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, 45930 + ... + 682336.

It is an arithmetic number, because the mean of its divisors is an integer number (18061259040).

Almost surely, 2^231736790131 is an apocalyptic number.

231736790131 is a deficient number, since it is larger than the sum of its proper divisors (57243354509).

231736790131 is a wasteful number, since it uses less digits than its factorization.

231736790131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641154.

The product of its (nonzero) digits is 142884, while the sum is 43.

The spelling of 231736790131 in words is "two hundred thirty-one billion, seven hundred thirty-six million, seven hundred ninety thousand, one hundred thirty-one".