31482920 has 64 divisors (see below), whose sum is σ = 81475200. Its totient is φ = 10725120.

The previous prime is 31482907. The next prime is 31482947. The reversal of 31482920 is 2928413.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63875 + ... + 64365.

It is an arithmetic number, because the mean of its divisors is an integer number (1273050).

Almost surely, 2^31482920 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31482920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40737600).

31482920 is an abundant number, since it is smaller than the sum of its proper divisors (49992280).

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

31482920 is a wasteful number, since it uses less digits than its factorization.

31482920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738 (or 734 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 31482920 is about 5610.9642665054. The cubic root of 31482920 is about 315.7608883872.

The spelling of 31482920 in words is "thirty-one million, four hundred eighty-two thousand, nine hundred twenty".