315977383 has 2 divisors, whose sum is σ = 315977384. Its totient is φ = 315977382.

The previous prime is 315977369. The next prime is 315977393. The reversal of 315977383 is 383779513.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-315977383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315977303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157988691 + 157988692.

It is an arithmetic number, because the mean of its divisors is an integer number (157988692).

Almost surely, 2^315977383 is an apocalyptic number.

315977383 is a deficient number, since it is larger than the sum of its proper divisors (1).

315977383 is an equidigital number, since it uses as much as digits as its factorization.

315977383 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 476280, while the sum is 46.

The square root of 315977383 is about 17775.7526704216. The cubic root of 315977383 is about 681.1122102943.

The spelling of 315977383 in words is "three hundred fifteen million, nine hundred seventy-seven thousand, three hundred eighty-three".