312913122 has 32 divisors (see below), whose sum is σ = 642816000. Its totient is φ = 101498448.

The previous prime is 312913093. The next prime is 312913123. The reversal of 312913122 is 221319213.

It is a junction number, because it is equal to n+sod(n) for n = 312913092 and 312913101.

It is not an unprimeable number, because it can be changed into a prime (312913123) 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, 47379 + ... + 53577.

It is an arithmetic number, because the mean of its divisors is an integer number (20088000).

Almost surely, 2^312913122 is an apocalyptic number.

312913122 is an abundant number, since it is smaller than the sum of its proper divisors (329902878).

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

312913122 is a wasteful number, since it uses less digits than its factorization.

312913122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6430.

The product of its digits is 648, while the sum is 24.

The square root of 312913122 is about 17689.3505251041. The cubic root of 312913122 is about 678.9033086403.

The spelling of 312913122 in words is "three hundred twelve million, nine hundred thirteen thousand, one hundred twenty-two".