123631823 has 4 divisors (see below), whose sum is σ = 141293520. Its totient is φ = 105970128.

The previous prime is 123631819. The next prime is 123631853. The reversal of 123631823 is 328136321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 123631823 - 2² = 123631819 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123631853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8830838 + ... + 8830851.

It is an arithmetic number, because the mean of its divisors is an integer number (35323380).

Almost surely, 2^123631823 is an apocalyptic number.

123631823 is a deficient number, since it is larger than the sum of its proper divisors (17661697).

123631823 is an equidigital number, since it uses as much as digits as its factorization.

123631823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17661696.

The product of its digits is 5184, while the sum is 29.

The square root of 123631823 is about 11118.9848007810. The cubic root of 123631823 is about 498.1690675566.

The spelling of 123631823 in words is "one hundred twenty-three million, six hundred thirty-one thousand, eight hundred twenty-three".