31372080 has 80 divisors (see below), whose sum is σ = 98755584. Its totient is φ = 8236800.

The previous prime is 31372051. The next prime is 31372111. The reversal of 31372080 is 8027313.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 31372080.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15105 + ... + 17055.

Almost surely, 2^31372080 is an apocalyptic number.

31372080 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 31372080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49377792).

31372080 is an abundant number, since it is smaller than the sum of its proper divisors (67383504).

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

31372080 is a wasteful number, since it uses less digits than its factorization.

31372080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2034 (or 2028 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 31372080 is about 5601.0784675810. The cubic root of 31372080 is about 315.3898926190.

Adding to 31372080 its reverse (8027313), we get a palindrome (39399393).

The spelling of 31372080 in words is "thirty-one million, three hundred seventy-two thousand, eighty".