31423693 has 8 divisors (see below), whose sum is σ = 36883712. Its totient is φ = 26206416.

The previous prime is 31423687. The next prime is 31423697. The reversal of 31423693 is 39632413.

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

It is a cyclic number.

It is not a de Polignac number, because 31423693 - 2⁵ = 31423661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31423697) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60405 + ... + 60922.

It is an arithmetic number, because the mean of its divisors is an integer number (4610464).

Almost surely, 2^31423693 is an apocalyptic number.

It is an amenable number.

31423693 is a deficient number, since it is larger than the sum of its proper divisors (5460019).

31423693 is a wasteful number, since it uses less digits than its factorization.

31423693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121371.

The product of its digits is 11664, while the sum is 31.

The square root of 31423693 is about 5605.6839903798. The cubic root of 31423693 is about 315.5627565133.

The spelling of 31423693 in words is "thirty-one million, four hundred twenty-three thousand, six hundred ninety-three".