312011112 has 32 divisors (see below), whose sum is σ = 891460800. Its totient is φ = 89145984.

The previous prime is 312011111. The next prime is 312011137. The reversal of 312011112 is 211110213.

It is a super-2 number, since 2×312011112² = 194701868022953088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (312011111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 928437 + ... + 928772.

It is an arithmetic number, because the mean of its divisors is an integer number (27858150).

Almost surely, 2^312011112 is an apocalyptic number.

It is an amenable number.

312011112 is an abundant number, since it is smaller than the sum of its proper divisors (579449688).

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

312011112 is a wasteful number, since it uses less digits than its factorization.

312011112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1857225 (or 1857221 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 312011112 is about 17663.8362764152. The cubic root of 312011112 is about 678.2503404606.

Adding to 312011112 its reverse (211110213), we get a palindrome (523121325).

The spelling of 312011112 in words is "three hundred twelve million, eleven thousand, one hundred twelve".