312897319 has 12 divisors (see below), whose sum is σ = 364494256. Its totient is φ = 263120832.

The previous prime is 312897251. The next prime is 312897341. The reversal of 312897319 is 913798213.

It is not a de Polignac number, because 312897319 - 2¹³ = 312889127 is a prime.

It is a super-2 number, since 2×312897319² = 195809464474775522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312894319) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11707 + ... + 27619.

Almost surely, 2^312897319 is an apocalyptic number.

312897319 is a deficient number, since it is larger than the sum of its proper divisors (51596937).

312897319 is an equidigital number, since it uses as much as digits as its factorization.

312897319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16026 (or 15973 counting only the distinct ones).

The product of its digits is 81648, while the sum is 43.

The square root of 312897319 is about 17688.9038382823. The cubic root of 312897319 is about 678.8918796005.

The spelling of 312897319 in words is "three hundred twelve million, eight hundred ninety-seven thousand, three hundred nineteen".