23243530139 has 2 divisors, whose sum is σ = 23243530140. Its totient is φ = 23243530138.

The previous prime is 23243530069. The next prime is 23243530147. The reversal of 23243530139 is 93103534232.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23243530139 - 2¹² = 23243526043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23243530099 and 23243530108.

It is not a weakly prime, because it can be changed into another prime (23243530039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11621765069 + 11621765070.

It is an arithmetic number, because the mean of its divisors is an integer number (11621765070).

Almost surely, 2^23243530139 is an apocalyptic number.

23243530139 is a deficient number, since it is larger than the sum of its proper divisors (1).

23243530139 is an equidigital number, since it uses as much as digits as its factorization.

23243530139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58320, while the sum is 35.

The spelling of 23243530139 in words is "twenty-three billion, two hundred forty-three million, five hundred thirty thousand, one hundred thirty-nine".