312897863 has 8 divisors (see below), whose sum is σ = 321584880. Its totient is φ = 304223040.

The previous prime is 312897859. The next prime is 312897877. The reversal of 312897863 is 368798213.

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 312897863 - 2² = 312897859 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312897803) 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, 78683 + ... + 82563.

It is an arithmetic number, because the mean of its divisors is an integer number (40198110).

Almost surely, 2^312897863 is an apocalyptic number.

312897863 is a deficient number, since it is larger than the sum of its proper divisors (8687017).

312897863 is a wasteful number, since it uses less digits than its factorization.

312897863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6097.

The product of its digits is 435456, while the sum is 47.

The square root of 312897863 is about 17688.9192151471. The cubic root of 312897863 is about 678.8922730384.

The spelling of 312897863 in words is "three hundred twelve million, eight hundred ninety-seven thousand, eight hundred sixty-three".