30319872931 has 2 divisors, whose sum is σ = 30319872932. Its totient is φ = 30319872930.

The previous prime is 30319872901. The next prime is 30319872943. The reversal of 30319872931 is 13927891303.

It is a strong prime.

It is an emirp because it is prime and its reverse (13927891303) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30319872931 - 2⁵ = 30319872899 is a prime.

It is a super-2 number, since 2×30319872931² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (30319872901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15159936465 + 15159936466.

It is an arithmetic number, because the mean of its divisors is an integer number (15159936466).

Almost surely, 2^30319872931 is an apocalyptic number.

30319872931 is a deficient number, since it is larger than the sum of its proper divisors (1).

30319872931 is an equidigital number, since it uses as much as digits as its factorization.

30319872931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 244944, while the sum is 46.

The spelling of 30319872931 in words is "thirty billion, three hundred nineteen million, eight hundred seventy-two thousand, nine hundred thirty-one".