31450828 has 6 divisors (see below), whose sum is σ = 55038956. Its totient is φ = 15725412.

The previous prime is 31450823. The next prime is 31450829. The reversal of 31450828 is 82805413.

It is a self number, because there is not a number n which added to its sum of digits gives 31450828.

It is not an unprimeable number, because it can be changed into a prime (31450823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3931350 + ... + 3931357.

Almost surely, 2^31450828 is an apocalyptic number.

It is an amenable number.

31450828 is a deficient number, since it is larger than the sum of its proper divisors (23588128).

31450828 is a wasteful number, since it uses less digits than its factorization.

31450828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7862711 (or 7862709 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 31450828 is about 5608.1037793536. The cubic root of 31450828 is about 315.6535620070.

The spelling of 31450828 in words is "thirty-one million, four hundred fifty thousand, eight hundred twenty-eight".