23320312129 has 2 divisors, whose sum is σ = 23320312130. Its totient is φ = 23320312128.

The previous prime is 23320312087. The next prime is 23320312153. The reversal of 23320312129 is 92121302332.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22733703729 + 586608400 = 150777^2 + 24220^2 .

It is a cyclic number.

It is not a de Polignac number, because 23320312129 - 2²⁹ = 22783441217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23320312097 and 23320312106.

It is not a weakly prime, because it can be changed into another prime (23320312199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11660156064 + 11660156065.

It is an arithmetic number, because the mean of its divisors is an integer number (11660156065).

Almost surely, 2^23320312129 is an apocalyptic number.

It is an amenable number.

23320312129 is a deficient number, since it is larger than the sum of its proper divisors (1).

23320312129 is an equidigital number, since it uses as much as digits as its factorization.

23320312129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 28.

The spelling of 23320312129 in words is "twenty-three billion, three hundred twenty million, three hundred twelve thousand, one hundred twenty-nine".