231133423 has 8 divisors (see below), whose sum is σ = 243689600. Its totient is φ = 218616408.

The previous prime is 231133391. The next prime is 231133429. The reversal of 231133423 is 324331132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 231133423 - 2⁵ = 231133391 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231133394 and 231133403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231133429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2758 + ... + 21676.

It is an arithmetic number, because the mean of its divisors is an integer number (30461200).

Almost surely, 2^231133423 is an apocalyptic number.

231133423 is a deficient number, since it is larger than the sum of its proper divisors (12556177).

231133423 is a wasteful number, since it uses less digits than its factorization.

231133423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19581.

The product of its digits is 1296, while the sum is 22.

The square root of 231133423 is about 15203.0728144017. The cubic root of 231133423 is about 613.6973533846.

Adding to 231133423 its reverse (324331132), we get a palindrome (555464555).

The spelling of 231133423 in words is "two hundred thirty-one million, one hundred thirty-three thousand, four hundred twenty-three".