31368245039 has 2 divisors, whose sum is σ = 31368245040. Its totient is φ = 31368245038.

The previous prime is 31368245021. The next prime is 31368245071. The reversal of 31368245039 is 93054286313.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31368245039 - 2¹⁶ = 31368179503 is a prime.

It is a super-2 number, since 2×31368245039² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31368235039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15684122519 + 15684122520.

It is an arithmetic number, because the mean of its divisors is an integer number (15684122520).

Almost surely, 2^31368245039 is an apocalyptic number.

31368245039 is a deficient number, since it is larger than the sum of its proper divisors (1).

31368245039 is an equidigital number, since it uses as much as digits as its factorization.

31368245039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 466560, while the sum is 44.

The spelling of 31368245039 in words is "thirty-one billion, three hundred sixty-eight million, two hundred forty-five thousand, thirty-nine".