316656149 has 2 divisors, whose sum is σ = 316656150. Its totient is φ = 316656148.

The previous prime is 316656143. The next prime is 316656181. The reversal of 316656149 is 941656613.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 257827249 + 58828900 = 16057^2 + 7670^2 .

It is a cyclic number.

It is not a de Polignac number, because 316656149 - 2⁸ = 316655893 is a prime.

It is a super-2 number, since 2×316656149² = 200542233399020402, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (316656143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158328074 + 158328075.

It is an arithmetic number, because the mean of its divisors is an integer number (158328075).

Almost surely, 2^316656149 is an apocalyptic number.

It is an amenable number.

316656149 is a deficient number, since it is larger than the sum of its proper divisors (1).

316656149 is an equidigital number, since it uses as much as digits as its factorization.

316656149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116640, while the sum is 41.

The square root of 316656149 is about 17794.8348966772. The cubic root of 316656149 is about 681.5995712986.

The spelling of 316656149 in words is "three hundred sixteen million, six hundred fifty-six thousand, one hundred forty-nine".