316121279 has 2 divisors, whose sum is σ = 316121280. Its totient is φ = 316121278.

The previous prime is 316121249. The next prime is 316121293. The reversal of 316121279 is 972121613.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 316121279 - 2⁸ = 316121023 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (316121249) 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, 158060639 + 158060640.

It is an arithmetic number, because the mean of its divisors is an integer number (158060640).

Almost surely, 2^316121279 is an apocalyptic number.

316121279 is a deficient number, since it is larger than the sum of its proper divisors (1).

316121279 is an equidigital number, since it uses as much as digits as its factorization.

316121279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 32.

The square root of 316121279 is about 17779.7997457789. The cubic root of 316121279 is about 681.2155873648.

The spelling of 316121279 in words is "three hundred sixteen million, one hundred twenty-one thousand, two hundred seventy-nine".