19931323361 has 8 divisors (see below), whose sum is σ = 21037514880. Its totient is φ = 18830849328.

The previous prime is 19931323327. The next prime is 19931323387. The reversal of 19931323361 is 16332313991.

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-19931323361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19931323661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1422206 + ... + 1436151.

It is an arithmetic number, because the mean of its divisors is an integer number (2629689360).

Almost surely, 2^19931323361 is an apocalyptic number.

It is an amenable number.

19931323361 is a deficient number, since it is larger than the sum of its proper divisors (1106191519).

19931323361 is a wasteful number, since it uses less digits than its factorization.

19931323361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2858743.

The product of its digits is 78732, while the sum is 41.

The spelling of 19931323361 in words is "nineteen billion, nine hundred thirty-one million, three hundred twenty-three thousand, three hundred sixty-one".