231775130317 has 48 divisors (see below), whose sum is σ = 259816464000. Its totient is φ = 206113057920.

The previous prime is 231775130309. The next prime is 231775130329. The reversal of 231775130317 is 713031577132.

It is not a de Polignac number, because 231775130317 - 2³ = 231775130309 is a prime.

It is a super-2 number, since 2×231775130317² (a number of 24 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 231775130317.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231775130347) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 146785234 + ... + 146786812.

It is an arithmetic number, because the mean of its divisors is an integer number (5412843000).

Almost surely, 2^231775130317 is an apocalyptic number.

It is an amenable number.

231775130317 is a deficient number, since it is larger than the sum of its proper divisors (28041333683).

231775130317 is a wasteful number, since it uses less digits than its factorization.

231775130317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1922 (or 1891 counting only the distinct ones).

The product of its (nonzero) digits is 92610, while the sum is 40.

The spelling of 231775130317 in words is "two hundred thirty-one billion, seven hundred seventy-five million, one hundred thirty thousand, three hundred seventeen".