23203139999 has 4 divisors (see below), whose sum is σ = 24987996936. Its totient is φ = 21418283064.

The previous prime is 23203139989. The next prime is 23203140011. The reversal of 23203139999 is 99993130232.

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 23203139999 - 2⁴ = 23203139983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23203139969) 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 3 ways as a sum of consecutive naturals, for example, 892428449 + ... + 892428474.

It is an arithmetic number, because the mean of its divisors is an integer number (6246999234).

Almost surely, 2^23203139999 is an apocalyptic number.

23203139999 is a deficient number, since it is larger than the sum of its proper divisors (1784856937).

23203139999 is a wasteful number, since it uses less digits than its factorization.

23203139999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1784856936.

The product of its (nonzero) digits is 708588, while the sum is 50.

The spelling of 23203139999 in words is "twenty-three billion, two hundred three million, one hundred thirty-nine thousand, nine hundred ninety-nine".