231310020031 has 8 divisors (see below), whose sum is σ = 237569585904. Its totient is φ = 225050872320.

The previous prime is 231310020017. The next prime is 231310020041. The reversal of 231310020031 is 130020013132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 231310020031 - 2⁵ = 231310019999 is a prime.

It is a super-2 number, since 2×231310020031² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231310019987 and 231310020014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231310020041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1251516 + ... + 1424398.

It is an arithmetic number, because the mean of its divisors is an integer number (29696198238).

Almost surely, 2^231310020031 is an apocalyptic number.

231310020031 is a deficient number, since it is larger than the sum of its proper divisors (6259565873).

231310020031 is a wasteful number, since it uses less digits than its factorization.

231310020031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209081.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 231310020031 its reverse (130020013132), we get a palindrome (361330033163).

The spelling of 231310020031 in words is "two hundred thirty-one billion, three hundred ten million, twenty thousand, thirty-one".