123381231 has 8 divisors (see below), whose sum is σ = 173166720. Its totient is φ = 77924952.

The previous prime is 123381229. The next prime is 123381239. The reversal of 123381231 is 132183321.

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

It is not a de Polignac number, because 123381231 - 2¹ = 123381229 is a prime.

It is a super-2 number, since 2×123381231² = 30445856326150722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123381239) 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, 1082235 + ... + 1082348.

It is an arithmetic number, because the mean of its divisors is an integer number (21645840).

Almost surely, 2^123381231 is an apocalyptic number.

123381231 is a deficient number, since it is larger than the sum of its proper divisors (49785489).

123381231 is a wasteful number, since it uses less digits than its factorization.

123381231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2164605.

The product of its digits is 864, while the sum is 24.

The square root of 123381231 is about 11107.7104301472. The cubic root of 123381231 is about 497.8322566932.

The spelling of 123381231 in words is "one hundred twenty-three million, three hundred eighty-one thousand, two hundred thirty-one".