316491401 has 2 divisors, whose sum is σ = 316491402. Its totient is φ = 316491400.

The previous prime is 316491361. The next prime is 316491403. The reversal of 316491401 is 104194613.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 202322176 + 114169225 = 14224^2 + 10685^2 .

It is a cyclic number.

It is not a de Polignac number, because 316491401 - 2⁶ = 316491337 is a prime.

It is a Sophie Germain prime.

Together with 316491403, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (316491403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158245700 + 158245701.

It is an arithmetic number, because the mean of its divisors is an integer number (158245701).

Almost surely, 2^316491401 is an apocalyptic number.

It is an amenable number.

316491401 is a deficient number, since it is larger than the sum of its proper divisors (1).

316491401 is an equidigital number, since it uses as much as digits as its factorization.

316491401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 316491401 is about 17790.2051983669. The cubic root of 316491401 is about 681.4813445866.

The spelling of 316491401 in words is "three hundred sixteen million, four hundred ninety-one thousand, four hundred one".