312220310231 has 8 divisors (see below), whose sum is σ = 334600380384. Its totient is φ = 290574012960.

The previous prime is 312220310203. The next prime is 312220310239. The reversal of 312220310231 is 132013022213.

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 312220310231 - 2⁶ = 312220310167 is a prime.

It is a super-2 number, since 2×312220310231² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312220310239) 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, 183442340 + ... + 183444041.

It is an arithmetic number, because the mean of its divisors is an integer number (41825047548).

Almost surely, 2^312220310231 is an apocalyptic number.

312220310231 is a deficient number, since it is larger than the sum of its proper divisors (22380070153).

312220310231 is a wasteful number, since it uses less digits than its factorization.

312220310231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366886441.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 312220310231 its reverse (132013022213), we get a palindrome (444233332444).

The spelling of 312220310231 in words is "three hundred twelve billion, two hundred twenty million, three hundred ten thousand, two hundred thirty-one".