30131312179 has 2 divisors, whose sum is σ = 30131312180. Its totient is φ = 30131312178.

The previous prime is 30131312177. The next prime is 30131312207. The reversal of 30131312179 is 97121313103.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30131312179 - 2¹ = 30131312177 is a prime.

Together with 30131312177, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 30131312179.

It is not a weakly prime, because it can be changed into another prime (30131312177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15065656089 + 15065656090.

It is an arithmetic number, because the mean of its divisors is an integer number (15065656090).

Almost surely, 2^30131312179 is an apocalyptic number.

30131312179 is a deficient number, since it is larger than the sum of its proper divisors (1).

30131312179 is an equidigital number, since it uses as much as digits as its factorization.

30131312179 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3402, while the sum is 31.

The spelling of 30131312179 in words is "thirty billion, one hundred thirty-one million, three hundred twelve thousand, one hundred seventy-nine".