123130253 has 4 divisors (see below), whose sum is σ = 123171168. Its totient is φ = 123089340.

The previous prime is 123130243. The next prime is 123130327. The reversal of 123130253 is 352031321.

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: 352031321 = 1069 ⋅329309.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123130253 is a prime.

It is a super-2 number, since 2×123130253² = 30322118407688018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123130213) 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, 15551 + ... + 22092.

It is an arithmetic number, because the mean of its divisors is an integer number (30792792).

Almost surely, 2^123130253 is an apocalyptic number.

It is an amenable number.

123130253 is a deficient number, since it is larger than the sum of its proper divisors (40915).

123130253 is an equidigital number, since it uses as much as digits as its factorization.

123130253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40914.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 123130253 is about 11096.4072113455. The cubic root of 123130253 is about 497.4944696068.

Adding to 123130253 its reverse (352031321), we get a palindrome (475161574).

The spelling of 123130253 in words is "one hundred twenty-three million, one hundred thirty thousand, two hundred fifty-three".