31666652 has 12 divisors (see below), whose sum is σ = 56462616. Its totient is φ = 15534480.

The previous prime is 31666643. The next prime is 31666693. The reversal of 31666652 is 25666613.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74474 + ... + 74897.

It is an arithmetic number, because the mean of its divisors is an integer number (4705218).

Almost surely, 2^31666652 is an apocalyptic number.

It is an amenable number.

31666652 is a deficient number, since it is larger than the sum of its proper divisors (24795964).

31666652 is a wasteful number, since it uses less digits than its factorization.

31666652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149428 (or 149426 counting only the distinct ones).

The product of its digits is 38880, while the sum is 35.

The square root of 31666652 is about 5627.3130355437. The cubic root of 31666652 is about 316.3739497573.

The spelling of 31666652 in words is "thirty-one million, six hundred sixty-six thousand, six hundred fifty-two".