31944851663 has 2 divisors, whose sum is σ = 31944851664. Its totient is φ = 31944851662.

The previous prime is 31944851647. The next prime is 31944851717. The reversal of 31944851663 is 36615844913.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31944851663 - 2⁴ = 31944851647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31944854663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15972425831 + 15972425832.

It is an arithmetic number, because the mean of its divisors is an integer number (15972425832).

Almost surely, 2^31944851663 is an apocalyptic number.

31944851663 is a deficient number, since it is larger than the sum of its proper divisors (1).

31944851663 is an equidigital number, since it uses as much as digits as its factorization.

31944851663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1866240, while the sum is 50.

The spelling of 31944851663 in words is "thirty-one billion, nine hundred forty-four million, eight hundred fifty-one thousand, six hundred sixty-three".