231041243 has 2 divisors, whose sum is σ = 231041244. Its totient is φ = 231041242.

The previous prime is 231041177. The next prime is 231041287. The reversal of 231041243 is 342140132.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231041243 is a prime.

It is not a weakly prime, because it can be changed into another prime (231046243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115520621 + 115520622.

It is an arithmetic number, because the mean of its divisors is an integer number (115520622).

Almost surely, 2^231041243 is an apocalyptic number.

231041243 is a deficient number, since it is larger than the sum of its proper divisors (1).

231041243 is an equidigital number, since it uses as much as digits as its factorization.

231041243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 231041243 is about 15200.0408881029. The cubic root of 231041243 is about 613.6157581695.

Adding to 231041243 its reverse (342140132), we get a palindrome (573181375).

The spelling of 231041243 in words is "two hundred thirty-one million, forty-one thousand, two hundred forty-three".