19313392123 has 4 divisors (see below), whose sum is σ = 20153104848. Its totient is φ = 18473679400.

The previous prime is 19313392121. The next prime is 19313392129. The reversal of 19313392123 is 32129331391.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 19313392123 - 2¹ = 19313392121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19313392121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 419856328 + ... + 419856373.

It is an arithmetic number, because the mean of its divisors is an integer number (5038276212).

Almost surely, 2^19313392123 is an apocalyptic number.

19313392123 is a deficient number, since it is larger than the sum of its proper divisors (839712725).

19313392123 is an equidigital number, since it uses as much as digits as its factorization.

19313392123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839712724.

The product of its digits is 26244, while the sum is 37.

The spelling of 19313392123 in words is "nineteen billion, three hundred thirteen million, three hundred ninety-two thousand, one hundred twenty-three".