316263641 has 2 divisors, whose sum is σ = 316263642. Its totient is φ = 316263640.

The previous prime is 316263637. The next prime is 316263691. The reversal of 316263641 is 146362613.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 313148416 + 3115225 = 17696^2 + 1765^2 .

It is an emirp because it is prime and its reverse (146362613) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 316263641 - 2² = 316263637 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 316263598 and 316263607.

It is not a weakly prime, because it can be changed into another prime (316263601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158131820 + 158131821.

It is an arithmetic number, because the mean of its divisors is an integer number (158131821).

Almost surely, 2^316263641 is an apocalyptic number.

It is an amenable number.

316263641 is a deficient number, since it is larger than the sum of its proper divisors (1).

316263641 is an equidigital number, since it uses as much as digits as its factorization.

316263641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 32.

The square root of 316263641 is about 17783.8027710611. The cubic root of 316263641 is about 681.3178315198.

The spelling of 316263641 in words is "three hundred sixteen million, two hundred sixty-three thousand, six hundred forty-one".