31241242979 has 2 divisors, whose sum is σ = 31241242980. Its totient is φ = 31241242978.

The previous prime is 31241242957. The next prime is 31241243021. The reversal of 31241242979 is 97924214213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31241242979 - 2¹² = 31241238883 is a prime.

It is not a weakly prime, because it can be changed into another prime (31271242979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15620621489 + 15620621490.

It is an arithmetic number, because the mean of its divisors is an integer number (15620621490).

Almost surely, 2^31241242979 is an apocalyptic number.

31241242979 is a deficient number, since it is larger than the sum of its proper divisors (1).

31241242979 is an equidigital number, since it uses as much as digits as its factorization.

31241242979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 44.

The spelling of 31241242979 in words is "thirty-one billion, two hundred forty-one million, two hundred forty-two thousand, nine hundred seventy-nine".