31023320039 has 2 divisors, whose sum is σ = 31023320040. Its totient is φ = 31023320038.

The previous prime is 31023320011. The next prime is 31023320087. The reversal of 31023320039 is 93002332013.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31023320039 - 2¹² = 31023315943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31023320089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15511660019 + 15511660020.

It is an arithmetic number, because the mean of its divisors is an integer number (15511660020).

Almost surely, 2^31023320039 is an apocalyptic number.

31023320039 is a deficient number, since it is larger than the sum of its proper divisors (1).

31023320039 is an equidigital number, since it uses as much as digits as its factorization.

31023320039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 26.

The spelling of 31023320039 in words is "thirty-one billion, twenty-three million, three hundred twenty thousand, thirty-nine".