31474228 has 12 divisors (see below), whose sum is σ = 55133092. Its totient is φ = 15721920.

The previous prime is 31474217. The next prime is 31474249. The reversal of 31474228 is 82247413.

It can be written as a sum of positive squares in 2 ways, for example, as 15776784 + 15697444 = 3972^2 + 3962^2 .

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 31474228.

It is a congruent number.

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, 1768 + ... + 8128.

Almost surely, 2^31474228 is an apocalyptic number.

It is an amenable number.

31474228 is a deficient number, since it is larger than the sum of its proper divisors (23658864).

31474228 is a wasteful number, since it uses less digits than its factorization.

31474228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7602 (or 7600 counting only the distinct ones).

The product of its digits is 10752, while the sum is 31.

The square root of 31474228 is about 5610.1896581132. The cubic root of 31474228 is about 315.7318266371.

The spelling of 31474228 in words is "thirty-one million, four hundred seventy-four thousand, two hundred twenty-eight".