312620839 has 2 divisors, whose sum is σ = 312620840. Its totient is φ = 312620838.

The previous prime is 312620773. The next prime is 312620857. The reversal of 312620839 is 938026213.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 312620839 - 2¹¹ = 312618791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312620639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156310419 + 156310420.

It is an arithmetic number, because the mean of its divisors is an integer number (156310420).

Almost surely, 2^312620839 is an apocalyptic number.

312620839 is a deficient number, since it is larger than the sum of its proper divisors (1).

312620839 is an equidigital number, since it uses as much as digits as its factorization.

312620839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 312620839 is about 17681.0870423738. The cubic root of 312620839 is about 678.6918615463.

The spelling of 312620839 in words is "three hundred twelve million, six hundred twenty thousand, eight hundred thirty-nine".