312121032 has 32 divisors (see below), whose sum is σ = 780749280. Its totient is φ = 103980800.

The previous prime is 312121013. The next prime is 312121049. The reversal of 312121032 is 230121213.

It is an unprimeable number.

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, 64903 + ... + 69545.

It is an arithmetic number, because the mean of its divisors is an integer number (24398415).

Almost surely, 2^312121032 is an apocalyptic number.

It is an amenable number.

312121032 is an abundant number, since it is smaller than the sum of its proper divisors (468628248).

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

312121032 is a wasteful number, since it uses less digits than its factorization.

312121032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7453 (or 7449 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 312121032 is about 17666.9474443097. The cubic root of 312121032 is about 678.3299792099.

Adding to 312121032 its reverse (230121213), we get a palindrome (542242245).

The spelling of 312121032 in words is "three hundred twelve million, one hundred twenty-one thousand, thirty-two".