31082480 has 180 divisors, whose sum is σ = 90541080. Its totient is φ = 9884160.

The previous prime is 31082473. The next prime is 31082497. The reversal of 31082480 is 8428013.

It is a super-2 number, since 2×31082480² = 1932241125900800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1635911 + ... + 1635929.

It is an arithmetic number, because the mean of its divisors is an integer number (503006).

Almost surely, 2^31082480 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 31082480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45270540).

31082480 is an abundant number, since it is smaller than the sum of its proper divisors (59458600).

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

31082480 is a wasteful number, since it uses less digits than its factorization.

31082480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80 (or 50 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 31082480 is about 5575.1663652307. The cubic root of 31082480 is about 314.4164218233.

The spelling of 31082480 in words is "thirty-one million, eighty-two thousand, four hundred eighty".