23311012129 has 2 divisors, whose sum is σ = 23311012130. Its totient is φ = 23311012128.

The previous prime is 23311012099. The next prime is 23311012139. The reversal of 23311012129 is 92121011332.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20924201104 + 2386811025 = 144652^2 + 48855^2 .

It is a cyclic number.

It is not a de Polignac number, because 23311012129 - 2¹⁹ = 23310487841 is a prime.

It is a super-2 number, since 2×23311012129² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23311012139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11655506064 + 11655506065.

It is an arithmetic number, because the mean of its divisors is an integer number (11655506065).

Almost surely, 2^23311012129 is an apocalyptic number.

It is an amenable number.

23311012129 is a deficient number, since it is larger than the sum of its proper divisors (1).

23311012129 is an equidigital number, since it uses as much as digits as its factorization.

23311012129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 25.

The spelling of 23311012129 in words is "twenty-three billion, three hundred eleven million, twelve thousand, one hundred twenty-nine".