30312131329979 has 2 divisors, whose sum is σ = 30312131329980. Its totient is φ = 30312131329978.

The previous prime is 30312131329973. The next prime is 30312131330029. The reversal of 30312131329979 is 97992313121303.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30312131329979 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30312131329979.

It is not a weakly prime, because it can be changed into another prime (30312131329973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15156065664989 + 15156065664990.

It is an arithmetic number, because the mean of its divisors is an integer number (15156065664990).

Almost surely, 2^{30312131329979} is an apocalyptic number.

30312131329979 is a deficient number, since it is larger than the sum of its proper divisors (1).

30312131329979 is an equidigital number, since it uses as much as digits as its factorization.

30312131329979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1653372, while the sum is 53.

The spelling of 30312131329979 in words is "thirty trillion, three hundred twelve billion, one hundred thirty-one million, three hundred twenty-nine thousand, nine hundred seventy-nine".