312972997 has 8 divisors (see below), whose sum is σ = 333416160. Its totient is φ = 292926960.

The previous prime is 312972971. The next prime is 312973007. The reversal of 312972997 is 799279213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 312972997 - 2¹¹ = 312970949 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 312972997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312972917) 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, 97654 + ... + 100807.

It is an arithmetic number, because the mean of its divisors is an integer number (41677020).

Almost surely, 2^312972997 is an apocalyptic number.

It is an amenable number.

312972997 is a deficient number, since it is larger than the sum of its proper divisors (20443163).

312972997 is a wasteful number, since it uses less digits than its factorization.

312972997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198563.

The product of its digits is 428652, while the sum is 49.

The square root of 312972997 is about 17691.0428465933. The cubic root of 312972997 is about 678.9466079251.

The spelling of 312972997 in words is "three hundred twelve million, nine hundred seventy-two thousand, nine hundred ninety-seven".