31914480 has 160 divisors (see below), whose sum is σ = 109118016. Its totient is φ = 7667712.

The previous prime is 31914451. The next prime is 31914481. The reversal of 31914480 is 8441913.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31914481) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 165264 + ... + 165456.

Almost surely, 2^31914480 is an apocalyptic number.

31914480 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 31914480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54559008).

31914480 is an abundant number, since it is smaller than the sum of its proper divisors (77203536).

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

31914480 is a wasteful number, since it uses less digits than its factorization.

31914480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275 (or 269 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 31914480 is about 5649.2902209039. The cubic root of 31914480 is about 317.1971361176.

The spelling of 31914480 in words is "thirty-one million, nine hundred fourteen thousand, four hundred eighty".