31080384 has 42 divisors (see below), whose sum is σ = 89087960. Its totient is φ = 10359936.

The previous prime is 31080359. The next prime is 31080389. The reversal of 31080384 is 48308013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31080389) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26404 + ... + 27555.

Almost surely, 2^31080384 is an apocalyptic number.

It is an amenable number.

31080384 is an abundant number, since it is smaller than the sum of its proper divisors (58007576).

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

31080384 is a wasteful number, since it uses less digits than its factorization.

31080384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53977 (or 53964 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 31080384 is about 5574.9783856083. The cubic root of 31080384 is about 314.4093542659.

Adding to 31080384 its reverse (48308013), we get a palindrome (79388397).

The spelling of 31080384 in words is "thirty-one million, eighty thousand, three hundred eighty-four".