31663630430323 has 4 divisors (see below), whose sum is σ = 31665353264440. Its totient is φ = 31661907596208.

The previous prime is 31663630430291. The next prime is 31663630430357. The reversal of 31663630430323 is 32303403636613.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31663630430323 - 2⁵ = 31663630430291 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31663630430323.

It is not an unprimeable number, because it can be changed into a prime (31663630430023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 861389490 + ... + 861426247.

It is an arithmetic number, because the mean of its divisors is an integer number (7916338316110).

Almost surely, 2^{31663630430323} is an apocalyptic number.

31663630430323 is a deficient number, since it is larger than the sum of its proper divisors (1722834117).

31663630430323 is a wasteful number, since it uses less digits than its factorization.

31663630430323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1722834116.

The product of its (nonzero) digits is 1259712, while the sum is 43.

The spelling of 31663630430323 in words is "thirty-one trillion, six hundred sixty-three billion, six hundred thirty million, four hundred thirty thousand, three hundred twenty-three".