315023389 has 2 divisors, whose sum is σ = 315023390. Its totient is φ = 315023388.

The previous prime is 315023383. The next prime is 315023393. The reversal of 315023389 is 983320513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 165328164 + 149695225 = 12858^2 + 12235^2 .

It is a cyclic number.

It is not a de Polignac number, because 315023389 - 2¹⁷ = 314892317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315023383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157511694 + 157511695.

It is an arithmetic number, because the mean of its divisors is an integer number (157511695).

Almost surely, 2^315023389 is an apocalyptic number.

It is an amenable number.

315023389 is a deficient number, since it is larger than the sum of its proper divisors (1).

315023389 is an equidigital number, since it uses as much as digits as its factorization.

315023389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 315023389 is about 17748.8982474969. The cubic root of 315023389 is about 680.4260514865.

The spelling of 315023389 in words is "three hundred fifteen million, twenty-three thousand, three hundred eighty-nine".