31408912 has 10 divisors (see below), whose sum is σ = 60854798. Its totient is φ = 15704448.

The previous prime is 31408903. The next prime is 31408931. The reversal of 31408912 is 21980413.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 31404816 + 4096 = 5604^2 + 64^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 981513 + ... + 981544.

Almost surely, 2^31408912 is an apocalyptic number.

It is an amenable number.

31408912 is a deficient number, since it is larger than the sum of its proper divisors (29445886).

31408912 is a wasteful number, since it uses less digits than its factorization.

31408912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1963065 (or 1963059 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 31408912 is about 5604.3654413323. The cubic root of 31408912 is about 315.5132708739.

The spelling of 31408912 in words is "thirty-one million, four hundred eight thousand, nine hundred twelve".