315239983 has 2 divisors, whose sum is σ = 315239984. Its totient is φ = 315239982.

The previous prime is 315239957. The next prime is 315240007. The reversal of 315239983 is 389932513.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-315239983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315239083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157619991 + 157619992.

It is an arithmetic number, because the mean of its divisors is an integer number (157619992).

Almost surely, 2^315239983 is an apocalyptic number.

315239983 is a deficient number, since it is larger than the sum of its proper divisors (1).

315239983 is an equidigital number, since it uses as much as digits as its factorization.

315239983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 174960, while the sum is 43.

The square root of 315239983 is about 17754.9988172345. The cubic root of 315239983 is about 680.5819578331.

The spelling of 315239983 in words is "three hundred fifteen million, two hundred thirty-nine thousand, nine hundred eighty-three".