31472793 has 20 divisors (see below), whose sum is σ = 51290448. Its totient is φ = 19073880.

The previous prime is 31472773. The next prime is 31472807. The reversal of 31472793 is 39727413.

It is not a de Polignac number, because 31472793 - 2⁸ = 31472537 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31472723) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 16771 + ... + 18552.

Almost surely, 2^31472793 is an apocalyptic number.

31472793 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

31472793 is a deficient number, since it is larger than the sum of its proper divisors (19817655).

31472793 is a wasteful number, since it uses less digits than its factorization.

31472793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35346 (or 35337 counting only the distinct ones).

The product of its digits is 31752, while the sum is 36.

The square root of 31472793 is about 5610.0617643659. The cubic root of 31472793 is about 315.7270281921.

The spelling of 31472793 in words is "thirty-one million, four hundred seventy-two thousand, seven hundred ninety-three".