23403042139 has 2 divisors, whose sum is σ = 23403042140. Its totient is φ = 23403042138.

The previous prime is 23403042109. The next prime is 23403042193. The reversal of 23403042139 is 93124030432.

Together with next prime (23403042193) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23403042139 - 2⁵ = 23403042107 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23403042139.

It is not a weakly prime, because it can be changed into another prime (23403042109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11701521069 + 11701521070.

It is an arithmetic number, because the mean of its divisors is an integer number (11701521070).

Almost surely, 2^23403042139 is an apocalyptic number.

23403042139 is a deficient number, since it is larger than the sum of its proper divisors (1).

23403042139 is an equidigital number, since it uses as much as digits as its factorization.

23403042139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 31.

The spelling of 23403042139 in words is "twenty-three billion, four hundred three million, forty-two thousand, one hundred thirty-nine".