123412523 has 4 divisors (see below), whose sum is σ = 132905808. Its totient is φ = 113919240.

The previous prime is 123412517. The next prime is 123412529. The reversal of 123412523 is 325214321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 325214321 = 11471 ⋅28351.

It is an interprime number because it is at equal distance from previous prime (123412517) and next prime (123412529).

It is a cyclic number.

It is not a de Polignac number, because 123412523 - 2¹⁴ = 123396139 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123412529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4746623 + ... + 4746648.

It is an arithmetic number, because the mean of its divisors is an integer number (33226452).

Almost surely, 2^123412523 is an apocalyptic number.

123412523 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

123412523 is a deficient number, since it is larger than the sum of its proper divisors (9493285).

123412523 is an equidigital number, since it uses as much as digits as its factorization.

123412523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9493284.

The product of its digits is 1440, while the sum is 23.

The square root of 123412523 is about 11109.1189119570. The cubic root of 123412523 is about 497.8743399449.

Adding to 123412523 its reverse (325214321), we get a palindrome (448626844).

The spelling of 123412523 in words is "one hundred twenty-three million, four hundred twelve thousand, five hundred twenty-three".