123117253 has 6 divisors (see below), whose sum is σ = 143218086. Its totient is φ = 105529032.

The previous prime is 123117233. The next prime is 123117271. The reversal of 123117253 is 352711321.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 69505569 + 53611684 = 8337^2 + 7322^2 .

It is not a de Polignac number, because 123117253 - 2¹⁷ = 122986181 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 (123117223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1256250 + ... + 1256347.

It is an arithmetic number, because the mean of its divisors is an integer number (23869681).

Almost surely, 2^123117253 is an apocalyptic number.

It is an amenable number.

123117253 is a deficient number, since it is larger than the sum of its proper divisors (20100833).

123117253 is an equidigital number, since it uses as much as digits as its factorization.

123117253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2512611 (or 2512604 counting only the distinct ones).

The product of its digits is 1260, while the sum is 25.

The square root of 123117253 is about 11095.8214206971. The cubic root of 123117253 is about 497.4769606259.

Adding to 123117253 its reverse (352711321), we get a palindrome (475828574).

The spelling of 123117253 in words is "one hundred twenty-three million, one hundred seventeen thousand, two hundred fifty-three".