316242491 has 2 divisors, whose sum is σ = 316242492. Its totient is φ = 316242490.

The previous prime is 316242473. The next prime is 316242499. The reversal of 316242491 is 194242613.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 316242491 - 2¹⁴ = 316226107 is a prime.

It is a super-2 number, since 2×316242491² = 200018626227770162, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (316242499) 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, 158121245 + 158121246.

It is an arithmetic number, because the mean of its divisors is an integer number (158121246).

Almost surely, 2^316242491 is an apocalyptic number.

316242491 is a deficient number, since it is larger than the sum of its proper divisors (1).

316242491 is an equidigital number, since it uses as much as digits as its factorization.

316242491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 32.

The square root of 316242491 is about 17783.2081188969. The cubic root of 316242491 is about 681.3026435653.

The spelling of 316242491 in words is "three hundred sixteen million, two hundred forty-two thousand, four hundred ninety-one".