31660673 has 8 divisors (see below), whose sum is σ = 36040896. Its totient is φ = 27530800.

The previous prime is 31660667. The next prime is 31660687. The reversal of 31660673 is 37606613.

It is a happy number.

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

It is not a de Polignac number, because 31660673 - 2⁶ = 31660609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31660633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62318 + ... + 62823.

It is an arithmetic number, because the mean of its divisors is an integer number (4505112).

Almost surely, 2^31660673 is an apocalyptic number.

It is an amenable number.

31660673 is a deficient number, since it is larger than the sum of its proper divisors (4380223).

31660673 is a wasteful number, since it uses less digits than its factorization.

31660673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125175.

The product of its (nonzero) digits is 13608, while the sum is 32.

The square root of 31660673 is about 5626.7817622510. The cubic root of 31660673 is about 316.3540369174.

The spelling of 31660673 in words is "thirty-one million, six hundred sixty thousand, six hundred seventy-three".