123281823 has 32 divisors (see below), whose sum is σ = 204144640. Its totient is φ = 64579680.

The previous prime is 123281789. The next prime is 123281831. The reversal of 123281823 is 328182321.

It is not a de Polignac number, because 123281823 - 2¹⁷ = 123150751 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123281843) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7386 + ... + 17352.

It is an arithmetic number, because the mean of its divisors is an integer number (6379520).

Almost surely, 2^123281823 is an apocalyptic number.

123281823 is a deficient number, since it is larger than the sum of its proper divisors (80862817).

123281823 is a wasteful number, since it uses less digits than its factorization.

123281823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10027.

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

The square root of 123281823 is about 11103.2347989223. The cubic root of 123281823 is about 497.6985199666.

The spelling of 123281823 in words is "one hundred twenty-three million, two hundred eighty-one thousand, eight hundred twenty-three".