316640293213 has 2 divisors, whose sum is σ = 316640293214. Its totient is φ = 316640293212.

The previous prime is 316640293163. The next prime is 316640293223. The reversal of 316640293213 is 312392046613.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 315347387364 + 1292905849 = 561558^2 + 35957^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-316640293213 is a prime.

It is a super-2 number, since 2×316640293213² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (316640293223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158320146606 + 158320146607.

It is an arithmetic number, because the mean of its divisors is an integer number (158320146607).

Almost surely, 2^316640293213 is an apocalyptic number.

It is an amenable number.

316640293213 is a deficient number, since it is larger than the sum of its proper divisors (1).

316640293213 is an equidigital number, since it uses as much as digits as its factorization.

316640293213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 139968, while the sum is 40.

The spelling of 316640293213 in words is "three hundred sixteen billion, six hundred forty million, two hundred ninety-three thousand, two hundred thirteen".