231027097731 has 16 divisors (see below), whose sum is σ = 313172053920. Its totient is φ = 151451493120.

The previous prime is 231027097723. The next prime is 231027097733. The reversal of 231027097731 is 137790720132.

It is not a de Polignac number, because 231027097731 - 2³ = 231027097723 is a prime.

It is a super-2 number, since 2×231027097731² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231027097733) 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, 500305 + ... + 844013.

It is an arithmetic number, because the mean of its divisors is an integer number (19573253370).

Almost surely, 2^231027097731 is an apocalyptic number.

231027097731 is a deficient number, since it is larger than the sum of its proper divisors (82144956189).

231027097731 is a wasteful number, since it uses less digits than its factorization.

231027097731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347446.

The product of its (nonzero) digits is 111132, while the sum is 42.

The spelling of 231027097731 in words is "two hundred thirty-one billion, twenty-seven million, ninety-seven thousand, seven hundred thirty-one".