312220323112 has 32 divisors (see below), whose sum is σ = 599791084200. Its totient is φ = 152277299200.

The previous prime is 312220323101. The next prime is 312220323127. The reversal of 312220323112 is 211323022213.

It can be written as a sum of positive squares in 4 ways, for example, as 53348988676 + 258871334436 = 230974^2 + 508794^2 .

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, 1980312 + ... + 2132152.

Almost surely, 2^312220323112 is an apocalyptic number.

It is an amenable number.

312220323112 is a deficient number, since it is larger than the sum of its proper divisors (287570761088).

312220323112 is a wasteful number, since it uses less digits than its factorization.

312220323112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158157 (or 158153 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 312220323112 its reverse (211323022213), we get a palindrome (523543345325).

The spelling of 312220323112 in words is "three hundred twelve billion, two hundred twenty million, three hundred twenty-three thousand, one hundred twelve".