31424980 has 24 divisors (see below), whose sum is σ = 68269320. Its totient is φ = 12136320.

The previous prime is 31424977. The next prime is 31424989. The reversal of 31424980 is 8942413.

It can be written as a sum of positive squares in 4 ways, for example, as 20164 + 31404816 = 142^2 + 5604^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31424989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26511 + ... + 27670.

It is an arithmetic number, because the mean of its divisors is an integer number (2844555).

Almost surely, 2^31424980 is an apocalyptic number.

It is an amenable number.

31424980 is an abundant number, since it is smaller than the sum of its proper divisors (36844340).

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

31424980 is a wasteful number, since it uses less digits than its factorization.

31424980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54219 (or 54217 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 31424980 is about 5605.7987834028. The cubic root of 31424980 is about 315.5670645549.

The spelling of 31424980 in words is "thirty-one million, four hundred twenty-four thousand, nine hundred eighty".