315031012331 has 8 divisors (see below), whose sum is σ = 360043292160. Its totient is φ = 270020694888.

The previous prime is 315031012319. The next prime is 315031012349. The reversal of 315031012331 is 133210130513.

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

It is a de Polignac number, because none of the positive numbers 2^k-315031012331 is a prime.

It is a super-2 number, since 2×315031012331² (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 = 315031012297 and 315031012306.

It is not an unprimeable number, because it can be changed into a prime (315031012301) 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, 128801 + ... + 804146.

It is an arithmetic number, because the mean of its divisors is an integer number (45005411520).

Almost surely, 2^315031012331 is an apocalyptic number.

315031012331 is a deficient number, since it is larger than the sum of its proper divisors (45012279829).

315031012331 is an equidigital number, since it uses as much as digits as its factorization.

315031012331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 981193.

The product of its (nonzero) digits is 810, while the sum is 23.

Adding to 315031012331 its reverse (133210130513), we get a palindrome (448241142844).

The spelling of 315031012331 in words is "three hundred fifteen billion, thirty-one million, twelve thousand, three hundred thirty-one".