31061828 has 12 divisors (see below), whose sum is σ = 62123712. Its totient is φ = 13312200.

The previous prime is 31061819. The next prime is 31061851. The reversal of 31061828 is 82816013.

31061828 is an admirable number.

It is a hoax number, since the sum of its digits (29) 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 31061828.

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, 554648 + ... + 554703.

It is an arithmetic number, because the mean of its divisors is an integer number (5176976).

Almost surely, 2^31061828 is an apocalyptic number.

It is an amenable number.

31061828 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31061828 is a wasteful number, since it uses less digits than its factorization.

31061828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1109362 (or 1109360 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 31061828 is about 5573.3139154367. The cubic root of 31061828 is about 314.3467709397.

The spelling of 31061828 in words is "thirty-one million, sixty-one thousand, eight hundred twenty-eight".