312894319 has 2 divisors, whose sum is σ = 312894320. Its totient is φ = 312894318.

The previous prime is 312894317. The next prime is 312894347. The reversal of 312894319 is 913498213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 312894319 - 2¹ = 312894317 is a prime.

It is a super-2 number, since 2×312894319² = 195805709724947522, which contains 22 as substring.

Together with 312894317, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312894317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156447159 + 156447160.

It is an arithmetic number, because the mean of its divisors is an integer number (156447160).

Almost surely, 2^312894319 is an apocalyptic number.

312894319 is a deficient number, since it is larger than the sum of its proper divisors (1).

312894319 is an equidigital number, since it uses as much as digits as its factorization.

312894319 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 40.

The square root of 312894319 is about 17688.8190391558. The cubic root of 312894319 is about 678.8897098982.

The spelling of 312894319 in words is "three hundred twelve million, eight hundred ninety-four thousand, three hundred nineteen".