231345043 has 2 divisors, whose sum is σ = 231345044. Its totient is φ = 231345042.

The previous prime is 231345041. The next prime is 231345089. The reversal of 231345043 is 340543132.

231345043 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231345043 - 2¹ = 231345041 is a prime.

Together with 231345041, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 231344999 and 231345017.

It is not a weakly prime, because it can be changed into another prime (231345041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115672521 + 115672522.

It is an arithmetic number, because the mean of its divisors is an integer number (115672522).

Almost surely, 2^231345043 is an apocalyptic number.

231345043 is a deficient number, since it is larger than the sum of its proper divisors (1).

231345043 is an equidigital number, since it uses as much as digits as its factorization.

231345043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 231345043 is about 15210.0309993109. The cubic root of 231345043 is about 613.8845915852.

Adding to 231345043 its reverse (340543132), we get a palindrome (571888175).

The spelling of 231345043 in words is "two hundred thirty-one million, three hundred forty-five thousand, forty-three".