123531253 has 4 divisors (see below), whose sum is σ = 123971148. Its totient is φ = 123091360.

The previous prime is 123531223. The next prime is 123531263. The reversal of 123531253 is 352135321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 352135321 = 947 ⋅371843.

It can be written as a sum of positive squares in 2 ways, for example, as 108305649 + 15225604 = 10407^2 + 3902^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123531253 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 (123531203) 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, 219526 + ... + 220087.

It is an arithmetic number, because the mean of its divisors is an integer number (30992787).

Almost surely, 2^123531253 is an apocalyptic number.

It is an amenable number.

123531253 is a deficient number, since it is larger than the sum of its proper divisors (439895).

123531253 is an equidigital number, since it uses as much as digits as its factorization.

123531253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439894.

The product of its digits is 2700, while the sum is 25.

The square root of 123531253 is about 11114.4614354453. The cubic root of 123531253 is about 498.0339500948.

Adding to 123531253 its reverse (352135321), we get a palindrome (475666574).

The spelling of 123531253 in words is "one hundred twenty-three million, five hundred thirty-one thousand, two hundred fifty-three".