31631461663 has 2 divisors, whose sum is σ = 31631461664. Its totient is φ = 31631461662.

The previous prime is 31631461657. The next prime is 31631461669. The reversal of 31631461663 is 36616413613.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (31631461657) and next prime (31631461669).

It is a cyclic number.

It is not a de Polignac number, because 31631461663 - 2³³ = 23041527071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31631461669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15815730831 + 15815730832.

It is an arithmetic number, because the mean of its divisors is an integer number (15815730832).

Almost surely, 2^31631461663 is an apocalyptic number.

31631461663 is a deficient number, since it is larger than the sum of its proper divisors (1).

31631461663 is an equidigital number, since it uses as much as digits as its factorization.

31631461663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 139968, while the sum is 40.

The spelling of 31631461663 in words is "thirty-one billion, six hundred thirty-one million, four hundred sixty-one thousand, six hundred sixty-three".