231023443 has 4 divisors (see below), whose sum is σ = 264026800. Its totient is φ = 198020088.

The previous prime is 231023423. The next prime is 231023453. The reversal of 231023443 is 344320132.

It is a happy number.

231023443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 231023443 - 2⁵ = 231023411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231023423) 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, 16501668 + ... + 16501681.

It is an arithmetic number, because the mean of its divisors is an integer number (66006700).

Almost surely, 2^231023443 is an apocalyptic number.

231023443 is a deficient number, since it is larger than the sum of its proper divisors (33003357).

231023443 is an equidigital number, since it uses as much as digits as its factorization.

231023443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33003356.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 231023443 is about 15199.4553520842. The cubic root of 231023443 is about 613.5999995963.

Adding to 231023443 its reverse (344320132), we get a palindrome (575343575).

The spelling of 231023443 in words is "two hundred thirty-one million, twenty-three thousand, four hundred forty-three".