31660412 has 24 divisors (see below), whose sum is σ = 63979104. Its totient is φ = 13427712.

The previous prime is 31660399. The next prime is 31660423. The reversal of 31660412 is 21406613.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3113 + ... + 8544.

It is an arithmetic number, because the mean of its divisors is an integer number (2665796).

Almost surely, 2^31660412 is an apocalyptic number.

It is an amenable number.

31660412 is an abundant number, since it is smaller than the sum of its proper divisors (32318692).

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

31660412 is a wasteful number, since it uses less digits than its factorization.

31660412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11765 (or 11763 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 31660412 is about 5626.7585695496. The cubic root of 31660412 is about 316.3531676094.

The spelling of 31660412 in words is "thirty-one million, six hundred sixty thousand, four hundred twelve".