312112122 has 32 divisors (see below), whose sum is σ = 713932800. Its totient is φ = 89108208.

The previous prime is 312112109. The next prime is 312112159. The reversal of 312112122 is 221211213.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92379 + ... + 95697.

It is an arithmetic number, because the mean of its divisors is an integer number (22310400).

Almost surely, 2^312112122 is an apocalyptic number.

312112122 is an abundant number, since it is smaller than the sum of its proper divisors (401820678).

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

312112122 is a wasteful number, since it uses less digits than its factorization.

312112122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5570.

The product of its digits is 48, while the sum is 15.

The square root of 312112122 is about 17666.6952767064. The cubic root of 312112122 is about 678.3235244728.

Adding to 312112122 its reverse (221211213), we get a palindrome (533323335).

Subtracting from 312112122 its reverse (221211213), we obtain a palindrome (90900909).

It can be divided in two parts, 31211 and 2122, that added together give a palindrome (33333).

The spelling of 312112122 in words is "three hundred twelve million, one hundred twelve thousand, one hundred twenty-two".