19231343999 has 16 divisors (see below), whose sum is σ = 22119736320. Its totient is φ = 16378549920.

The previous prime is 19231343983. The next prime is 19231344001. The reversal of 19231343999 is 99934313291.

It is a cyclic number.

It is not a de Polignac number, because 19231343999 - 2⁴ = 19231343983 is a prime.

It is a super-3 number, since 3×19231343999³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19231343999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19231343399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 693992 + ... + 721170.

It is an arithmetic number, because the mean of its divisors is an integer number (1382483520).

Almost surely, 2^19231343999 is an apocalyptic number.

19231343999 is a deficient number, since it is larger than the sum of its proper divisors (2888392321).

19231343999 is a wasteful number, since it uses less digits than its factorization.

19231343999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27830.

The product of its digits is 1417176, while the sum is 53.

The spelling of 19231343999 in words is "nineteen billion, two hundred thirty-one million, three hundred forty-three thousand, nine hundred ninety-nine".