31666342 has 8 divisors (see below), whose sum is σ = 50293656. Its totient is φ = 14901792.

The previous prime is 31666321. The next prime is 31666343. The reversal of 31666342 is 24366613.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31666343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 465648 + ... + 465715.

It is an arithmetic number, because the mean of its divisors is an integer number (6286707).

Almost surely, 2^31666342 is an apocalyptic number.

31666342 is a deficient number, since it is larger than the sum of its proper divisors (18627314).

31666342 is a wasteful number, since it uses less digits than its factorization.

31666342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 931382.

The product of its digits is 15552, while the sum is 31.

The square root of 31666342 is about 5627.2854912471. The cubic root of 31666342 is about 316.3729173753.

The spelling of 31666342 in words is "thirty-one million, six hundred sixty-six thousand, three hundred forty-two".