312716985 has 32 divisors (see below), whose sum is σ = 572581632. Its totient is φ = 142767360.

The previous prime is 312716977. The next prime is 312717017. The reversal of 312716985 is 589617213.

It is not a de Polignac number, because 312716985 - 2³ = 312716977 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 105747 + ... + 108663.

It is an arithmetic number, because the mean of its divisors is an integer number (17893176).

Almost surely, 2^312716985 is an apocalyptic number.

312716985 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

312716985 is a deficient number, since it is larger than the sum of its proper divisors (259864647).

312716985 is a wasteful number, since it uses less digits than its factorization.

312716985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3953.

The product of its digits is 90720, while the sum is 42.

The square root of 312716985 is about 17683.8057272749. The cubic root of 312716985 is about 678.7614312520.

The spelling of 312716985 in words is "three hundred twelve million, seven hundred sixteen thousand, nine hundred eighty-five".