312331310231 has 16 divisors (see below), whose sum is σ = 326482611840. Its totient is φ = 298519603200.

The previous prime is 312331310219. The next prime is 312331310237. The reversal of 312331310231 is 132013133213.

It is a cyclic number.

It is not a de Polignac number, because 312331310231 - 2⁶ = 312331310167 is a prime.

It is a super-2 number, since 2×312331310231² (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 = 312331310197 and 312331310206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312331310237) 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, 304631 + ... + 847031.

It is an arithmetic number, because the mean of its divisors is an integer number (20405163240).

Almost surely, 2^312331310231 is an apocalyptic number.

312331310231 is a deficient number, since it is larger than the sum of its proper divisors (14151301609).

312331310231 is a wasteful number, since it uses less digits than its factorization.

312331310231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542714.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 312331310231 its reverse (132013133213), we get a palindrome (444344443444).

The spelling of 312331310231 in words is "three hundred twelve billion, three hundred thirty-one million, three hundred ten thousand, two hundred thirty-one".