19317931983 has 24 divisors (see below), whose sum is σ = 31897547136. Its totient is φ = 11036178000.

The previous prime is 19317931961. The next prime is 19317932003. The reversal of 19317931983 is 38913971391.

It is a happy number.

19317931983 is a `hidden beast` number, since 1 + 9 + 317 + 9 + 319 + 8 + 3 = 666.

It is not a de Polignac number, because 19317931983 - 2¹⁷ = 19317800911 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19317931943) 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 23 ways as a sum of consecutive naturals, for example, 245968 + ... + 314858.

It is an arithmetic number, because the mean of its divisors is an integer number (1329064464).

Almost surely, 2^19317931983 is an apocalyptic number.

19317931983 is a deficient number, since it is larger than the sum of its proper divisors (12579615153).

19317931983 is a wasteful number, since it uses less digits than its factorization.

19317931983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73355 (or 73352 counting only the distinct ones).

The product of its digits is 1102248, while the sum is 54.

The spelling of 19317931983 in words is "nineteen billion, three hundred seventeen million, nine hundred thirty-one thousand, nine hundred eighty-three".