311463391 has 2 divisors, whose sum is σ = 311463392. Its totient is φ = 311463390.

The previous prime is 311463389. The next prime is 311463437. The reversal of 311463391 is 193364113.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 311463391 - 2¹ = 311463389 is a prime.

Together with 311463389, 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 (311463311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155731695 + 155731696.

It is an arithmetic number, because the mean of its divisors is an integer number (155731696).

Almost surely, 2^311463391 is an apocalyptic number.

311463391 is a deficient number, since it is larger than the sum of its proper divisors (1).

311463391 is an equidigital number, since it uses as much as digits as its factorization.

311463391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5832, while the sum is 31.

The square root of 311463391 is about 17648.3254446420. The cubic root of 311463391 is about 677.8532290206.

The spelling of 311463391 in words is "three hundred eleven million, four hundred sixty-three thousand, three hundred ninety-one".