312311312331320 has 32 divisors (see below), whose sum is σ = 702702284407200. Its totient is φ = 124924199303808.

The previous prime is 312311312331259. The next prime is 312311312331323. The reversal of 312311312331320 is 23133213113213.

It is a super-2 number, since 2×312311312331320² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312311312331323) 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, 5666042 + ... + 25626678.

It is an arithmetic number, because the mean of its divisors is an integer number (21959446387725).

Almost surely, 2^{312311312331320} is an apocalyptic number.

It is an amenable number.

312311312331320 is an abundant number, since it is smaller than the sum of its proper divisors (390390972075880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

312311312331320 is a wasteful number, since it uses less digits than its factorization.

312311312331320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20351807 (or 20351803 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 29.

Adding to 312311312331320 its reverse (23133213113213), we get a palindrome (335444525444533).

The spelling of 312311312331320 in words is "three hundred twelve trillion, three hundred eleven billion, three hundred twelve million, three hundred thirty-one thousand, three hundred twenty".