31316432663 has 2 divisors, whose sum is σ = 31316432664. Its totient is φ = 31316432662.

The previous prime is 31316432647. The next prime is 31316432669. The reversal of 31316432663 is 36623461313.

It is a strong prime.

It is an emirp because it is prime and its reverse (36623461313) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31316432663 - 2⁴ = 31316432647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31316432669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15658216331 + 15658216332.

It is an arithmetic number, because the mean of its divisors is an integer number (15658216332).

Almost surely, 2^31316432663 is an apocalyptic number.

31316432663 is a deficient number, since it is larger than the sum of its proper divisors (1).

31316432663 is an equidigital number, since it uses as much as digits as its factorization.

31316432663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968, while the sum is 38.

Adding to 31316432663 its reverse (36623461313), we get a palindrome (67939893976).

The spelling of 31316432663 in words is "thirty-one billion, three hundred sixteen million, four hundred thirty-two thousand, six hundred sixty-three".