312956997 has 16 divisors (see below), whose sum is σ = 438870528. Its totient is φ = 198095040.

The previous prime is 312956993. The next prime is 312957077. The reversal of 312956997 is 799659213.

It is a happy number.

It is not a de Polignac number, because 312956997 - 2² = 312956993 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312956993) 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 15 ways as a sum of consecutive naturals, for example, 26818 + ... + 36675.

It is an arithmetic number, because the mean of its divisors is an integer number (27429408).

Almost surely, 2^312956997 is an apocalyptic number.

It is an amenable number.

312956997 is a deficient number, since it is larger than the sum of its proper divisors (125913531).

312956997 is a wasteful number, since it uses less digits than its factorization.

312956997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63580.

The product of its digits is 918540, while the sum is 51.

The square root of 312956997 is about 17690.5906345718. The cubic root of 312956997 is about 678.9350378845.

The spelling of 312956997 in words is "three hundred twelve million, nine hundred fifty-six thousand, nine hundred ninety-seven".