12916312 has 32 divisors (see below), whose sum is σ = 25310880. Its totient is φ = 6173440.

The previous prime is 12916289. The next prime is 12916313. The reversal of 12916312 is 21361921.

It is a super-2 number, since 2×12916312² = 333662231362688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12916313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17013 + ... + 17755.

It is an arithmetic number, because the mean of its divisors is an integer number (790965).

Almost surely, 2^12916312 is an apocalyptic number.

It is an amenable number.

12916312 is a deficient number, since it is larger than the sum of its proper divisors (12394568).

12916312 is a wasteful number, since it uses less digits than its factorization.

12916312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 843 (or 839 counting only the distinct ones).

The product of its digits is 648, while the sum is 25.

The square root of 12916312 is about 3593.9270999841. The cubic root of 12916312 is about 234.6278219249.

The spelling of 12916312 in words is "twelve million, nine hundred sixteen thousand, three hundred twelve".