123431127 has 8 divisors (see below), whose sum is σ = 167364480. Its totient is φ = 80892600.

The previous prime is 123431123. The next prime is 123431129. The reversal of 123431127 is 721134321.

It is a happy number.

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

It is not a de Polignac number, because 123431127 - 2² = 123431123 is a prime.

It is a super-2 number, since 2×123431127² = 30470486224980258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123431097 and 123431106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123431123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 348499 + ... + 348852.

It is an arithmetic number, because the mean of its divisors is an integer number (20920560).

Almost surely, 2^123431127 is an apocalyptic number.

123431127 is a deficient number, since it is larger than the sum of its proper divisors (43933353).

123431127 is an equidigital number, since it uses as much as digits as its factorization.

123431127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697413.

The product of its digits is 1008, while the sum is 24.

The square root of 123431127 is about 11109.9562105348. The cubic root of 123431127 is about 497.8993562847.

Adding to 123431127 its reverse (721134321), we get a palindrome (844565448).

The spelling of 123431127 in words is "one hundred twenty-three million, four hundred thirty-one thousand, one hundred twenty-seven".