231993423 has 16 divisors (see below), whose sum is σ = 348537600. Its totient is φ = 152482680.

The previous prime is 231993403. The next prime is 231993427. The reversal of 231993423 is 324399132.

It is not a de Polignac number, because 231993423 - 2¹⁰ = 231992399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231993427) 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 15 ways as a sum of consecutive naturals, for example, 58593 + ... + 62426.

It is an arithmetic number, because the mean of its divisors is an integer number (21783600).

Almost surely, 2^231993423 is an apocalyptic number.

231993423 is a deficient number, since it is larger than the sum of its proper divisors (116544177).

231993423 is a wasteful number, since it uses less digits than its factorization.

231993423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121099 (or 121093 counting only the distinct ones).

The product of its digits is 34992, while the sum is 36.

The square root of 231993423 is about 15231.3303095954. The cubic root of 231993423 is about 614.4575585801.

The spelling of 231993423 in words is "two hundred thirty-one million, nine hundred ninety-three thousand, four hundred twenty-three".