315119989 has 2 divisors, whose sum is σ = 315119990. Its totient is φ = 315119988.

The previous prime is 315119983. The next prime is 315119993. The reversal of 315119989 is 989911513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 202123089 + 112996900 = 14217^2 + 10630^2 .

It is a cyclic number.

It is not a de Polignac number, because 315119989 - 2¹¹ = 315117941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315119983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157559994 + 157559995.

It is an arithmetic number, because the mean of its divisors is an integer number (157559995).

Almost surely, 2^315119989 is an apocalyptic number.

It is an amenable number.

315119989 is a deficient number, since it is larger than the sum of its proper divisors (1).

315119989 is an equidigital number, since it uses as much as digits as its factorization.

315119989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 87480, while the sum is 46.

The square root of 315119989 is about 17751.6193345847. The cubic root of 315119989 is about 680.4955938777.

The spelling of 315119989 in words is "three hundred fifteen million, one hundred nineteen thousand, nine hundred eighty-nine".