20123230069 has 2 divisors, whose sum is σ = 20123230070. Its totient is φ = 20123230068.

The previous prime is 20123230027. The next prime is 20123230073. The reversal of 20123230069 is 96003232102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15748995025 + 4374235044 = 125495^2 + 66138^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20123230069 is a prime.

It is a super-2 number, since 2×20123230069² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20123230009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10061615034 + 10061615035.

It is an arithmetic number, because the mean of its divisors is an integer number (10061615035).

Almost surely, 2^20123230069 is an apocalyptic number.

It is an amenable number.

20123230069 is a deficient number, since it is larger than the sum of its proper divisors (1).

20123230069 is an equidigital number, since it uses as much as digits as its factorization.

20123230069 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 20123230069 in words is "twenty billion, one hundred twenty-three million, two hundred thirty thousand, sixty-nine".