31649494623 has 8 divisors (see below), whose sum is σ = 42200371200. Its totient is φ = 21099140568.

The previous prime is 31649494621. The next prime is 31649494631. The reversal of 31649494623 is 32649494613.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31649494623 - 2¹ = 31649494621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31649494621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44088 + ... + 255426.

It is an arithmetic number, because the mean of its divisors is an integer number (5275046400).

Almost surely, 2^31649494623 is an apocalyptic number.

31649494623 is a deficient number, since it is larger than the sum of its proper divisors (10550876577).

31649494623 is a wasteful number, since it uses less digits than its factorization.

31649494623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261261.

The product of its digits is 3359232, while the sum is 51.

The spelling of 31649494623 in words is "thirty-one billion, six hundred forty-nine million, four hundred ninety-four thousand, six hundred twenty-three".