31793681318 has 8 divisors (see below), whose sum is σ = 54503453712. Its totient is φ = 13625863416.

The previous prime is 31793681317. The next prime is 31793681327. The reversal of 31793681318 is 81318639713.

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 (31793681317) 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, 1135488605 + ... + 1135488632.

It is an arithmetic number, because the mean of its divisors is an integer number (6812931714).

Almost surely, 2^31793681318 is an apocalyptic number.

31793681318 is a deficient number, since it is larger than the sum of its proper divisors (22709772394).

31793681318 is a wasteful number, since it uses less digits than its factorization.

31793681318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2270977246.

The product of its digits is 653184, while the sum is 50.

The spelling of 31793681318 in words is "thirty-one billion, seven hundred ninety-three million, six hundred eighty-one thousand, three hundred eighteen".