123253251 has 16 divisors (see below), whose sum is σ = 187073280. Its totient is φ = 71450720.

The previous prime is 123253243. The next prime is 123253279. The reversal of 123253251 is 152352321.

It is a happy number.

It is not a de Polignac number, because 123253251 - 2³ = 123253243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123253211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80436 + ... + 81953.

It is an arithmetic number, because the mean of its divisors is an integer number (11692080).

Almost surely, 2^123253251 is an apocalyptic number.

123253251 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

123253251 is a deficient number, since it is larger than the sum of its proper divisors (63820029).

123253251 is a wasteful number, since it uses less digits than its factorization.

123253251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162426.

The product of its digits is 1800, while the sum is 24.

The square root of 123253251 is about 11101.9480722979. The cubic root of 123253251 is about 497.6600678508.

It can be divided in two parts, 12325 and 3251, that added together give a triangular number (15576 = T₁₇₆).

The spelling of 123253251 in words is "one hundred twenty-three million, two hundred fifty-three thousand, two hundred fifty-one".