316976205421 has 2 divisors, whose sum is σ = 316976205422. Its totient is φ = 316976205420.

The previous prime is 316976205341. The next prime is 316976205437. The reversal of 316976205421 is 124502679613.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 294321440196 + 22654765225 = 542514^2 + 150515^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-316976205421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (316976205461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158488102710 + 158488102711.

It is an arithmetic number, because the mean of its divisors is an integer number (158488102711).

Almost surely, 2^316976205421 is an apocalyptic number.

It is an amenable number.

316976205421 is a deficient number, since it is larger than the sum of its proper divisors (1).

316976205421 is an equidigital number, since it uses as much as digits as its factorization.

316976205421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 544320, while the sum is 46.

The spelling of 316976205421 in words is "three hundred sixteen billion, nine hundred seventy-six million, two hundred five thousand, four hundred twenty-one".