31323030979 has 2 divisors, whose sum is σ = 31323030980. Its totient is φ = 31323030978.

The previous prime is 31323030931. The next prime is 31323031027. The reversal of 31323030979 is 97903032313.

It is a balanced prime because it is at equal distance from previous prime (31323030931) and next prime (31323031027).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31323030979 is a prime.

It is a super-2 number, since 2×31323030979² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31323090979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15661515489 + 15661515490.

It is an arithmetic number, because the mean of its divisors is an integer number (15661515490).

Almost surely, 2^31323030979 is an apocalyptic number.

31323030979 is a deficient number, since it is larger than the sum of its proper divisors (1).

31323030979 is an equidigital number, since it uses as much as digits as its factorization.

31323030979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 91854, while the sum is 40.

The spelling of 31323030979 in words is "thirty-one billion, three hundred twenty-three million, thirty thousand, nine hundred seventy-nine".