231123043 has 2 divisors, whose sum is σ = 231123044. Its totient is φ = 231123042.

The previous prime is 231123031. The next prime is 231123107. The reversal of 231123043 is 340321132.

231123043 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 231123043 - 2²¹ = 229025891 is a prime.

It is a super-2 number, since 2×231123043² = 106835722011159698, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 231123043.

It is not a weakly prime, because it can be changed into another prime (231123643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115561521 + 115561522.

It is an arithmetic number, because the mean of its divisors is an integer number (115561522).

Almost surely, 2^231123043 is an apocalyptic number.

231123043 is a deficient number, since it is larger than the sum of its proper divisors (1).

231123043 is an equidigital number, since it uses as much as digits as its factorization.

231123043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 231123043 is about 15202.7314322131. The cubic root of 231123043 is about 613.6881663765.

Adding to 231123043 its reverse (340321132), we get a palindrome (571444175).

The spelling of 231123043 in words is "two hundred thirty-one million, one hundred twenty-three thousand, forty-three".