123831093 has 4 divisors (see below), whose sum is σ = 165108128. Its totient is φ = 82554060.

The previous prime is 123831091. The next prime is 123831107. The reversal of 123831093 is 390138321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 123831093 - 2¹ = 123831091 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 123831093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123831091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20638513 + ... + 20638518.

It is an arithmetic number, because the mean of its divisors is an integer number (41277032).

Almost surely, 2^123831093 is an apocalyptic number.

It is an amenable number.

123831093 is a deficient number, since it is larger than the sum of its proper divisors (41277035).

123831093 is an equidigital number, since it uses as much as digits as its factorization.

123831093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41277034.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 123831093 is about 11127.9419930192. The cubic root of 123831093 is about 498.4365738258.

The spelling of 123831093 in words is "one hundred twenty-three million, eight hundred thirty-one thousand, ninety-three".