123430253 has 4 divisors (see below), whose sum is σ = 126300768. Its totient is φ = 120559740.

The previous prime is 123430249. The next prime is 123430297. The reversal of 123430253 is 352034321.

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.

It is a cyclic number.

It is not a de Polignac number, because 123430253 - 2² = 123430249 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123430243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1435193 + ... + 1435278.

It is an arithmetic number, because the mean of its divisors is an integer number (31575192).

Almost surely, 2^123430253 is an apocalyptic number.

It is an amenable number.

123430253 is a deficient number, since it is larger than the sum of its proper divisors (2870515).

123430253 is an equidigital number, since it uses as much as digits as its factorization.

123430253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2870514.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 123430253 is about 11109.9168763767. The cubic root of 123430253 is about 497.8981810947.

Adding to 123430253 its reverse (352034321), we get a palindrome (475464574).

The spelling of 123430253 in words is "one hundred twenty-three million, four hundred thirty thousand, two hundred fifty-three".