231434243 has 4 divisors (see below), whose sum is σ = 245048040. Its totient is φ = 217820448.

The previous prime is 231434233. The next prime is 231434263. The reversal of 231434243 is 342434132.

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

It is a cyclic number.

It is not a de Polignac number, because 231434243 - 2⁶ = 231434179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231434233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6806873 + ... + 6806906.

It is an arithmetic number, because the mean of its divisors is an integer number (61262010).

Almost surely, 2^231434243 is an apocalyptic number.

231434243 is a deficient number, since it is larger than the sum of its proper divisors (13613797).

231434243 is a wasteful number, since it uses less digits than its factorization.

231434243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13613796.

The product of its digits is 6912, while the sum is 26.

The square root of 231434243 is about 15212.9629921327. The cubic root of 231434243 is about 613.9634801991.

Adding to 231434243 its reverse (342434132), we get a palindrome (573868375).

The spelling of 231434243 in words is "two hundred thirty-one million, four hundred thirty-four thousand, two hundred forty-three".