31450228 has 6 divisors (see below), whose sum is σ = 55037906. Its totient is φ = 15725112.

The previous prime is 31450219. The next prime is 31450247. The reversal of 31450228 is 82205413.

It can be written as a sum of positive squares in only one way, i.e., 23931664 + 7518564 = 4892^2 + 2742^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3931275 + ... + 3931282.

Almost surely, 2^31450228 is an apocalyptic number.

It is an amenable number.

31450228 is a deficient number, since it is larger than the sum of its proper divisors (23587678).

31450228 is a wasteful number, since it uses less digits than its factorization.

31450228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7862561 (or 7862559 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 31450228 is about 5608.0502850813. The cubic root of 31450228 is about 315.6515547112.

The spelling of 31450228 in words is "thirty-one million, four hundred fifty thousand, two hundred twenty-eight".