31480488 has 160 divisors (see below), whose sum is σ = 98489160. Its totient is φ = 9331200.

The previous prime is 31480441. The next prime is 31480507. The reversal of 31480488 is 88408413.

It can be written as a sum of positive squares in 4 ways, for example, as 31337604 + 142884 = 5598^2 + 378^2 .

It is a super-2 number, since 2×31480488² = 1982042249436288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nialpdrome in base 9.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 311638 + ... + 311738.

Almost surely, 2^31480488 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 31480488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49244580).

31480488 is an abundant number, since it is smaller than the sum of its proper divisors (67008672).

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

31480488 is a wasteful number, since it uses less digits than its factorization.

31480488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169 (or 156 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The square root of 31480488 is about 5610.7475437770. The cubic root of 31480488 is about 315.7527575207.

The spelling of 31480488 in words is "thirty-one million, four hundred eighty thousand, four hundred eighty-eight".