123305253 has 4 divisors (see below), whose sum is σ = 164407008. Its totient is φ = 82203500.

The previous prime is 123305243. The next prime is 123305291. The reversal of 123305253 is 352503321.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 352503321 = 3 ⋅117501107.

It is a cyclic number.

It is not a de Polignac number, because 123305253 - 2¹⁰ = 123304229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123305243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20550873 + ... + 20550878.

It is an arithmetic number, because the mean of its divisors is an integer number (41101752).

Almost surely, 2^123305253 is an apocalyptic number.

It is an amenable number.

123305253 is a deficient number, since it is larger than the sum of its proper divisors (41101755).

123305253 is an equidigital number, since it uses as much as digits as its factorization.

123305253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41101754.

The product of its (nonzero) digits is 2700, while the sum is 24.

The square root of 123305253 is about 11104.2898467214. The cubic root of 123305253 is about 497.7300475603.

Adding to 123305253 its reverse (352503321), we get a palindrome (475808574).

The spelling of 123305253 in words is "one hundred twenty-three million, three hundred five thousand, two hundred fifty-three".