312011323122 has 16 divisors (see below), whose sum is σ = 632570902560. Its totient is φ = 102579064992.

The previous prime is 312011323087. The next prime is 312011323139. The reversal of 312011323122 is 221323110213.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 356176872 + ... + 356177747.

It is an arithmetic number, because the mean of its divisors is an integer number (39535681410).

Almost surely, 2^312011323122 is an apocalyptic number.

312011323122 is an abundant number, since it is smaller than the sum of its proper divisors (320559579438).

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

312011323122 is a wasteful number, since it uses less digits than its factorization.

312011323122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712354697.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 312011323122 its reverse (221323110213), we get a palindrome (533334433335).

The spelling of 312011323122 in words is "three hundred twelve billion, eleven million, three hundred twenty-three thousand, one hundred twenty-two".