316108358021 has 2 divisors, whose sum is σ = 316108358022. Its totient is φ = 316108358020.

The previous prime is 316108357963. The next prime is 316108358029. The reversal of 316108358021 is 120853801613.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 308120467396 + 7987890625 = 555086^2 + 89375^2 .

It is a cyclic number.

It is not a de Polignac number, because 316108358021 - 2³⁸ = 41230451077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (316108358029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158054179010 + 158054179011.

It is an arithmetic number, because the mean of its divisors is an integer number (158054179011).

Almost surely, 2^316108358021 is an apocalyptic number.

It is an amenable number.

316108358021 is a deficient number, since it is larger than the sum of its proper divisors (1).

316108358021 is an equidigital number, since it uses as much as digits as its factorization.

316108358021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 38.

The spelling of 316108358021 in words is "three hundred sixteen billion, one hundred eight million, three hundred fifty-eight thousand, twenty-one".