231340043 has 16 divisors (see below), whose sum is σ = 259117056. Its totient is φ = 204721440.

The previous prime is 231340033. The next prime is 231340069. The reversal of 231340043 is 340043132.

It is not a de Polignac number, because 231340043 - 2⁴ = 231340027 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231339997 and 231340024.

It is not an unprimeable number, because it can be changed into a prime (231340033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180521 + ... + 181797.

It is an arithmetic number, because the mean of its divisors is an integer number (16194816).

Almost surely, 2^231340043 is an apocalyptic number.

231340043 is a deficient number, since it is larger than the sum of its proper divisors (27777013).

231340043 is a wasteful number, since it uses less digits than its factorization.

231340043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1714.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 231340043 is about 15209.8666332089. The cubic root of 231340043 is about 613.8801689775.

Adding to 231340043 its reverse (340043132), we get a palindrome (571383175).

The spelling of 231340043 in words is "two hundred thirty-one million, three hundred forty thousand, forty-three".