31232430979 has 2 divisors, whose sum is σ = 31232430980. Its totient is φ = 31232430978.

The previous prime is 31232430913. The next prime is 31232431039. The reversal of 31232430979 is 97903423213.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (97903423213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31232430979 - 2⁷ = 31232430851 is a prime.

It is not a weakly prime, because it can be changed into another prime (31232430079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15616215489 + 15616215490.

It is an arithmetic number, because the mean of its divisors is an integer number (15616215490).

Almost surely, 2^31232430979 is an apocalyptic number.

31232430979 is a deficient number, since it is larger than the sum of its proper divisors (1).

31232430979 is an equidigital number, since it uses as much as digits as its factorization.

31232430979 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 43.

The spelling of 31232430979 in words is "thirty-one billion, two hundred thirty-two million, four hundred thirty thousand, nine hundred seventy-nine".