31321234663 has 2 divisors, whose sum is σ = 31321234664. Its totient is φ = 31321234662.

The previous prime is 31321234631. The next prime is 31321234667. The reversal of 31321234663 is 36643212313.

It is a strong prime.

It is an emirp because it is prime and its reverse (36643212313) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31321234663 - 2⁵ = 31321234631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31321234667) 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, 15660617331 + 15660617332.

It is an arithmetic number, because the mean of its divisors is an integer number (15660617332).

Almost surely, 2^31321234663 is an apocalyptic number.

31321234663 is a deficient number, since it is larger than the sum of its proper divisors (1).

31321234663 is an equidigital number, since it uses as much as digits as its factorization.

31321234663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 34.

Adding to 31321234663 its reverse (36643212313), we get a palindrome (67964446976).

The spelling of 31321234663 in words is "thirty-one billion, three hundred twenty-one million, two hundred thirty-four thousand, six hundred sixty-three".