312983985 has 16 divisors (see below), whose sum is σ = 508985280. Its totient is φ = 164187840.

The previous prime is 312983969. The next prime is 312984019. The reversal of 312983985 is 589389213.

It is a happy number.

It is not a de Polignac number, because 312983985 - 2⁴ = 312983969 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 170115 + ... + 171944.

It is an arithmetic number, because the mean of its divisors is an integer number (31811580).

Almost surely, 2^312983985 is an apocalyptic number.

It is an amenable number.

312983985 is a deficient number, since it is larger than the sum of its proper divisors (196001295).

312983985 is a wasteful number, since it uses less digits than its factorization.

312983985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342128.

The product of its digits is 466560, while the sum is 48.

The square root of 312983985 is about 17691.3533965042. The cubic root of 312983985 is about 678.9545534221.

The spelling of 312983985 in words is "three hundred twelve million, nine hundred eighty-three thousand, nine hundred eighty-five".