31144444039 has 2 divisors, whose sum is σ = 31144444040. Its totient is φ = 31144444038.

The previous prime is 31144444033. The next prime is 31144444043. The reversal of 31144444039 is 93044444113.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31144444039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31144443989 and 31144444007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31144444033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15572222019 + 15572222020.

It is an arithmetic number, because the mean of its divisors is an integer number (15572222020).

Almost surely, 2^31144444039 is an apocalyptic number.

31144444039 is a deficient number, since it is larger than the sum of its proper divisors (1).

31144444039 is an equidigital number, since it uses as much as digits as its factorization.

31144444039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82944, while the sum is 37.

The spelling of 31144444039 in words is "thirty-one billion, one hundred forty-four million, four hundred forty-four thousand, thirty-nine".