231107823 has 12 divisors (see below), whose sum is σ = 346186568. Its totient is φ = 154071720.

The previous prime is 231107797. The next prime is 231107827. The reversal of 231107823 is 328701132.

It is not a de Polignac number, because 231107823 - 2⁸ = 231107567 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231107827) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 475288 + ... + 475773.

Almost surely, 2^231107823 is an apocalyptic number.

231107823 is a deficient number, since it is larger than the sum of its proper divisors (115078745).

231107823 is an frugal number, since it uses more digits than its factorization.

231107823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 951076 (or 951064 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 231107823 is about 15202.2308560290. The cubic root of 231107823 is about 613.6746951409.

Adding to 231107823 its reverse (328701132), we get a palindrome (559808955).

The spelling of 231107823 in words is "two hundred thirty-one million, one hundred seven thousand, eight hundred twenty-three".