31478080 has 28 divisors (see below), whose sum is σ = 74957940. Its totient is φ = 12591104.

The previous prime is 31478077. The next prime is 31478081. The reversal of 31478080 is 8087413.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 23503104 + 7974976 = 4848^2 + 2824^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31478081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48865 + ... + 49504.

Almost surely, 2^31478080 is an apocalyptic number.

It is an amenable number.

31478080 is an abundant number, since it is smaller than the sum of its proper divisors (43479860).

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

31478080 is an equidigital number, since it uses as much as digits as its factorization.

31478080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98386 (or 98376 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 31478080 is about 5610.5329515118. The cubic root of 31478080 is about 315.7447064805.

The spelling of 31478080 in words is "thirty-one million, four hundred seventy-eight thousand, eighty".