31474172 has 12 divisors (see below), whose sum is σ = 55648320. Its totient is φ = 15574656.

The previous prime is 31474171. The next prime is 31474213. The reversal of 31474172 is 27147413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31474171) 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, 40172 + ... + 40947.

It is an arithmetic number, because the mean of its divisors is an integer number (4637360).

Almost surely, 2^31474172 is an apocalyptic number.

It is an amenable number.

31474172 is a deficient number, since it is larger than the sum of its proper divisors (24174148).

31474172 is a wasteful number, since it uses less digits than its factorization.

31474172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81220 (or 81218 counting only the distinct ones).

The product of its digits is 4704, while the sum is 29.

The square root of 31474172 is about 5610.1846671923. The cubic root of 31474172 is about 315.7316393834.

The spelling of 31474172 in words is "thirty-one million, four hundred seventy-four thousand, one hundred seventy-two".