231043433 has 4 divisors (see below), whose sum is σ = 231085140. Its totient is φ = 231001728.

The previous prime is 231043411. The next prime is 231043453. The reversal of 231043433 is 334340132.

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

It can be written as a sum of positive squares in 2 ways, for example, as 132894784 + 98148649 = 11528^2 + 9907^2 .

It is a cyclic number.

It is not a de Polignac number, because 231043433 - 2⁶ = 231043369 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231043399 and 231043408.

It is not an unprimeable number, because it can be changed into a prime (231043453) 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, 10988 + ... + 24141.

It is an arithmetic number, because the mean of its divisors is an integer number (57771285).

Almost surely, 2^231043433 is an apocalyptic number.

It is an amenable number.

231043433 is a deficient number, since it is larger than the sum of its proper divisors (41707).

231043433 is an equidigital number, since it uses as much as digits as its factorization.

231043433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41706.

The product of its (nonzero) digits is 2592, while the sum is 23.

The square root of 231043433 is about 15200.1129272121. The cubic root of 231043433 is about 613.6176969492.

Adding to 231043433 its reverse (334340132), we get a palindrome (565383565).

The spelling of 231043433 in words is "two hundred thirty-one million, forty-three thousand, four hundred thirty-three".