123255431 has 8 divisors (see below), whose sum is σ = 133193760. Its totient is φ = 113382432.

The previous prime is 123255427. The next prime is 123255443. The reversal of 123255431 is 134552321.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123255431 - 2² = 123255427 is a prime.

It is a super-2 number, since 2×123255431² = 30383802541991522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123255431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123255031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12371 + ... + 19988.

It is an arithmetic number, because the mean of its divisors is an integer number (16649220).

Almost surely, 2^123255431 is an apocalyptic number.

123255431 is a deficient number, since it is larger than the sum of its proper divisors (9938329).

123255431 is a wasteful number, since it uses less digits than its factorization.

123255431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32665.

The product of its digits is 3600, while the sum is 26.

The square root of 123255431 is about 11102.0462528311. The cubic root of 123255431 is about 497.6630018979.

The spelling of 123255431 in words is "one hundred twenty-three million, two hundred fifty-five thousand, four hundred thirty-one".