31680002398 has 8 divisors (see below), whose sum is σ = 51840003960. Its totient is φ = 14400001080.

The previous prime is 31680002381. The next prime is 31680002437. The reversal of 31680002398 is 89320008613.

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

It is a self number, because there is not a number n which added to its sum of digits gives 31680002398.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 720000033 + ... + 720000076.

It is an arithmetic number, because the mean of its divisors is an integer number (6480000495).

Almost surely, 2^31680002398 is an apocalyptic number.

31680002398 is a deficient number, since it is larger than the sum of its proper divisors (20160001562).

31680002398 is a wasteful number, since it uses less digits than its factorization.

31680002398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1440000122.

The product of its (nonzero) digits is 62208, while the sum is 40.

The spelling of 31680002398 in words is "thirty-one billion, six hundred eighty million, two thousand, three hundred ninety-eight".