316426991 has 2 divisors, whose sum is σ = 316426992. Its totient is φ = 316426990.

The previous prime is 316426973. The next prime is 316427003. The reversal of 316426991 is 199624613.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 316426991 - 2¹⁴ = 316410607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (316426961) 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, 158213495 + 158213496.

It is an arithmetic number, because the mean of its divisors is an integer number (158213496).

Almost surely, 2^316426991 is an apocalyptic number.

316426991 is a deficient number, since it is larger than the sum of its proper divisors (1).

316426991 is an equidigital number, since it uses as much as digits as its factorization.

316426991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69984, while the sum is 41.

The square root of 316426991 is about 17788.3948404571. The cubic root of 316426991 is about 681.4351114280.

The spelling of 316426991 in words is "three hundred sixteen million, four hundred twenty-six thousand, nine hundred ninety-one".