23121992039 has 2 divisors, whose sum is σ = 23121992040. Its totient is φ = 23121992038.

The previous prime is 23121992029. The next prime is 23121992051. The reversal of 23121992039 is 93029912132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23121992039 - 2²⁰ = 23120943463 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23121991987 and 23121992005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23121992029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11560996019 + 11560996020.

It is an arithmetic number, because the mean of its divisors is an integer number (11560996020).

Almost surely, 2^23121992039 is an apocalyptic number.

23121992039 is a deficient number, since it is larger than the sum of its proper divisors (1).

23121992039 is an equidigital number, since it uses as much as digits as its factorization.

23121992039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52488, while the sum is 41.

The spelling of 23121992039 in words is "twenty-three billion, one hundred twenty-one million, nine hundred ninety-two thousand, thirty-nine".