316689869 has 2 divisors, whose sum is σ = 316689870. Its totient is φ = 316689868.

The previous prime is 316689839. The next prime is 316689913. The reversal of 316689869 is 968986613.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 158886025 + 157803844 = 12605^2 + 12562^2 .

It is a cyclic number.

It is not a de Polignac number, because 316689869 - 2²⁴ = 299912653 is a prime.

It is a super-2 number, since 2×316689869² = 200584946254474322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (316689809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158344934 + 158344935.

It is an arithmetic number, because the mean of its divisors is an integer number (158344935).

Almost surely, 2^316689869 is an apocalyptic number.

It is an amenable number.

316689869 is a deficient number, since it is larger than the sum of its proper divisors (1).

316689869 is an equidigital number, since it uses as much as digits as its factorization.

316689869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3359232, while the sum is 56.

The square root of 316689869 is about 17795.7823373967. The cubic root of 316689869 is about 681.6237644409.

The spelling of 316689869 in words is "three hundred sixteen million, six hundred eighty-nine thousand, eight hundred sixty-nine".