123381228 has 24 divisors (see below), whose sum is σ = 290687488. Its totient is φ = 40727376.

The previous prime is 123381227. The next prime is 123381229. The reversal of 123381228 is 822183321.

It is an interprime number because it is at equal distance from previous prime (123381227) and next prime (123381229).

It is a junction number, because it is equal to n+sod(n) for n = 123381195 and 123381204.

It is not an unprimeable number, because it can be changed into a prime (123381221) 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, 48676 + ... + 51147.

Almost surely, 2^123381228 is an apocalyptic number.

It is an amenable number.

123381228 is an abundant number, since it is smaller than the sum of its proper divisors (167306260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123381228 is a wasteful number, since it uses less digits than its factorization.

123381228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99933 (or 99931 counting only the distinct ones).

The product of its digits is 4608, while the sum is 30.

The square root of 123381228 is about 11107.7102951058. The cubic root of 123381228 is about 497.8322526583.

The spelling of 123381228 in words is "one hundred twenty-three million, three hundred eighty-one thousand, two hundred twenty-eight".