312644023 has 2 divisors, whose sum is σ = 312644024. Its totient is φ = 312644022.

The previous prime is 312643949. The next prime is 312644053. The reversal of 312644023 is 320446213.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312644023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312644053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156322011 + 156322012.

It is an arithmetic number, because the mean of its divisors is an integer number (156322012).

Almost surely, 2^312644023 is an apocalyptic number.

312644023 is a deficient number, since it is larger than the sum of its proper divisors (1).

312644023 is an equidigital number, since it uses as much as digits as its factorization.

312644023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 312644023 is about 17681.7426460177. The cubic root of 312644023 is about 678.7086384223.

The spelling of 312644023 in words is "three hundred twelve million, six hundred forty-four thousand, twenty-three".