31792940 has 12 divisors (see below), whose sum is σ = 66765216. Its totient is φ = 12717168.

The previous prime is 31792927. The next prime is 31792963. The reversal of 31792940 is 4929713.

It is a self number, because there is not a number n which added to its sum of digits gives 31792940.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 794804 + ... + 794843.

It is an arithmetic number, because the mean of its divisors is an integer number (5563768).

Almost surely, 2^31792940 is an apocalyptic number.

It is an amenable number.

31792940 is an abundant number, since it is smaller than the sum of its proper divisors (34972276).

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

31792940 is a wasteful number, since it uses less digits than its factorization.

31792940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1589656 (or 1589654 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 31792940 is about 5638.5228562098. The cubic root of 31792940 is about 316.7939629797.

The spelling of 31792940 in words is "thirty-one million, seven hundred ninety-two thousand, nine hundred forty".