316562989 has 2 divisors, whose sum is σ = 316562990. Its totient is φ = 316562988.

The previous prime is 316562963. The next prime is 316563061. The reversal of 316562989 is 989265613.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 281065225 + 35497764 = 16765^2 + 5958^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-316562989 is a prime.

It is a super-2 number, since 2×316562989² = 200424252009228242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (316562929) 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, 158281494 + 158281495.

It is an arithmetic number, because the mean of its divisors is an integer number (158281495).

Almost surely, 2^316562989 is an apocalyptic number.

It is an amenable number.

316562989 is a deficient number, since it is larger than the sum of its proper divisors (1).

316562989 is an equidigital number, since it uses as much as digits as its factorization.

316562989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 699840, while the sum is 49.

The square root of 316562989 is about 17792.2170906270. The cubic root of 316562989 is about 681.5327227162.

The spelling of 316562989 in words is "three hundred sixteen million, five hundred sixty-two thousand, nine hundred eighty-nine".