31379798279 has 8 divisors (see below), whose sum is σ = 33230489760. Its totient is φ = 29529642496.

The previous prime is 31379798273. The next prime is 31379798287. The reversal of 31379798279 is 97289797313.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31379798279 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 (31379798273) 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, 10034 + ... + 250719.

It is an arithmetic number, because the mean of its divisors is an integer number (4153811220).

Almost surely, 2^31379798279 is an apocalyptic number.

31379798279 is a deficient number, since it is larger than the sum of its proper divisors (1850691481).

31379798279 is a wasteful number, since it uses less digits than its factorization.

31379798279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267849.

The product of its digits is 36006768, while the sum is 65.

The spelling of 31379798279 in words is "thirty-one billion, three hundred seventy-nine million, seven hundred ninety-eight thousand, two hundred seventy-nine".