31254480 has 120 divisors (see below), whose sum is σ = 106430688. Its totient is φ = 8218368.

The previous prime is 31254469. The next prime is 31254481. The reversal of 31254480 is 8445213.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31254481) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59499 + ... + 60021.

Almost surely, 2^31254480 is an apocalyptic number.

31254480 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 31254480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53215344).

31254480 is an abundant number, since it is smaller than the sum of its proper divisors (75176208).

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

31254480 is a wasteful number, since it uses less digits than its factorization.

31254480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625 (or 616 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 31254480 is about 5590.5706327709. The cubic root of 31254480 is about 314.9953136113.

Adding to 31254480 its reverse (8445213), we get a palindrome (39699693).

The spelling of 31254480 in words is "thirty-one million, two hundred fifty-four thousand, four hundred eighty".