123389523 has 12 divisors (see below), whose sum is σ = 182022048. Its totient is φ = 80509200.

The previous prime is 123389501. The next prime is 123389527. The reversal of 123389523 is 325983321.

123389523 is a `hidden beast` number, since 123 + 3 + 8 + 9 + 523 = 666.

It is not a de Polignac number, because 123389523 - 2¹⁶ = 123323987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123389527) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 145428 + ... + 146273.

It is an arithmetic number, because the mean of its divisors is an integer number (15168504).

Almost surely, 2^123389523 is an apocalyptic number.

123389523 is a deficient number, since it is larger than the sum of its proper divisors (58632525).

123389523 is a wasteful number, since it uses less digits than its factorization.

123389523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291754 (or 291751 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 123389523 is about 11108.0836781148. The cubic root of 123389523 is about 497.8434089367.

The spelling of 123389523 in words is "one hundred twenty-three million, three hundred eighty-nine thousand, five hundred twenty-three".