312131320303 has 16 divisors (see below), whose sum is σ = 346906080000. Its totient is φ = 278462162880.

The previous prime is 312131320253. The next prime is 312131320307. The reversal of 312131320303 is 303023131213.

It is not a de Polignac number, because 312131320303 - 2³³ = 303541385711 is a prime.

It is a super-2 number, since 2×312131320303² (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 (312131320307) 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, 816853 + ... + 1136446.

It is an arithmetic number, because the mean of its divisors is an integer number (21681630000).

Almost surely, 2^312131320303 is an apocalyptic number.

312131320303 is a deficient number, since it is larger than the sum of its proper divisors (34774759697).

312131320303 is a wasteful number, since it uses less digits than its factorization.

312131320303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1953582.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 312131320303 its reverse (303023131213), we get a palindrome (615154451516).

The spelling of 312131320303 in words is "three hundred twelve billion, one hundred thirty-one million, three hundred twenty thousand, three hundred three".