31480560 has 120 divisors (see below), whose sum is σ = 110376864. Its totient is φ = 8025600.

The previous prime is 31480529. The next prime is 31480621. The reversal of 31480560 is 6508413.

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15610 + ... + 17510.

Almost surely, 2^31480560 is an apocalyptic number.

31480560 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31480560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55188432).

31480560 is an abundant number, since it is smaller than the sum of its proper divisors (78896304).

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

31480560 is a wasteful number, since it uses less digits than its factorization.

31480560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1943 (or 1934 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 31480560 is about 5610.7539600307. The cubic root of 31480560 is about 315.7529982432.

Adding to 31480560 its reverse (6508413), we get a palindrome (37988973).

The spelling of 31480560 in words is "thirty-one million, four hundred eighty thousand, five hundred sixty".