30913797945971 has 2 divisors, whose sum is σ = 30913797945972. Its totient is φ = 30913797945970.

The previous prime is 30913797945911. The next prime is 30913797946007. The reversal of 30913797945971 is 17954979731903.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30913797945971 - 2³⁰ = 30912724204147 is a prime.

It is not a weakly prime, because it can be changed into another prime (30913797945911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15456898972985 + 15456898972986.

It is an arithmetic number, because the mean of its divisors is an integer number (15456898972986).

Almost surely, 2^{30913797945971} is an apocalyptic number.

30913797945971 is a deficient number, since it is larger than the sum of its proper divisors (1).

30913797945971 is an equidigital number, since it uses as much as digits as its factorization.

30913797945971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 405076140, while the sum is 74.

The spelling of 30913797945971 in words is "thirty trillion, nine hundred thirteen billion, seven hundred ninety-seven million, nine hundred forty-five thousand, nine hundred seventy-one".