31423222992 has 80 divisors (see below), whose sum is σ = 92862806400. Its totient is φ = 8969404416.

The previous prime is 31423222951. The next prime is 31423223003. The reversal of 31423222992 is 29922232413.

It is a self number, because there is not a number n which added to its sum of digits gives 31423222992.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 307888 + ... + 397040.

It is an arithmetic number, because the mean of its divisors is an integer number (1160785080).

Almost surely, 2^31423222992 is an apocalyptic number.

It is an amenable number.

31423222992 is an abundant number, since it is smaller than the sum of its proper divisors (61439583408).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31423222992 is a wasteful number, since it uses less digits than its factorization.

31423222992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90220 (or 90214 counting only the distinct ones).

The product of its digits is 93312, while the sum is 39.

The spelling of 31423222992 in words is "thirty-one billion, four hundred twenty-three million, two hundred twenty-two thousand, nine hundred ninety-two".