123523289 has 2 divisors, whose sum is σ = 123523290. Its totient is φ = 123523288.

The previous prime is 123523273. The next prime is 123523331. The reversal of 123523289 is 982325321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105925264 + 17598025 = 10292^2 + 4195^2 .

It is a cyclic number.

It is not a de Polignac number, because 123523289 - 2⁴ = 123523273 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (123523229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61761644 + 61761645.

It is an arithmetic number, because the mean of its divisors is an integer number (61761645).

Almost surely, 2^123523289 is an apocalyptic number.

It is an amenable number.

123523289 is a deficient number, since it is larger than the sum of its proper divisors (1).

123523289 is an equidigital number, since it uses as much as digits as its factorization.

123523289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 35.

The square root of 123523289 is about 11114.1031577001. The cubic root of 123523289 is about 498.0232471957.

It can be divided in two parts, 1235232 and 89, that added together give a palindrome (1235321).

The spelling of 123523289 in words is "one hundred twenty-three million, five hundred twenty-three thousand, two hundred eighty-nine".