31407612 has 12 divisors (see below), whose sum is σ = 73284456. Its totient is φ = 10469200.

The previous prime is 31407611. The next prime is 31407637. The reversal of 31407612 is 21670413.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31407611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1308639 + ... + 1308662.

It is an arithmetic number, because the mean of its divisors is an integer number (6107038).

Almost surely, 2^31407612 is an apocalyptic number.

It is an amenable number.

31407612 is an abundant number, since it is smaller than the sum of its proper divisors (41876844).

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

31407612 is a wasteful number, since it uses less digits than its factorization.

31407612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2617308 (or 2617306 counting only the distinct ones).

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

The square root of 31407612 is about 5604.2494591158. The cubic root of 31407612 is about 315.5089178322.

The spelling of 31407612 in words is "thirty-one million, four hundred seven thousand, six hundred twelve".