316789969 has 2 divisors, whose sum is σ = 316789970. Its totient is φ = 316789968.

The previous prime is 316789933. The next prime is 316789981. The reversal of 316789969 is 969987613.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 304956369 + 11833600 = 17463^2 + 3440^2 .

It is a cyclic number.

It is not a de Polignac number, because 316789969 - 2⁹ = 316789457 is a prime.

It is a super-2 number, since 2×316789969² = 200711768918041922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (316789909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158394984 + 158394985.

It is an arithmetic number, because the mean of its divisors is an integer number (158394985).

Almost surely, 2^316789969 is an apocalyptic number.

It is an amenable number.

316789969 is a deficient number, since it is larger than the sum of its proper divisors (1).

316789969 is an equidigital number, since it uses as much as digits as its factorization.

316789969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4408992, while the sum is 58.

The square root of 316789969 is about 17798.5945793481. The cubic root of 316789969 is about 681.6955732334.

The spelling of 316789969 in words is "three hundred sixteen million, seven hundred eighty-nine thousand, nine hundred sixty-nine".