230431211 has 4 divisors (see below), whose sum is σ = 230544024. Its totient is φ = 230318400.

The previous prime is 230431207. The next prime is 230431231. The reversal of 230431211 is 112134032.

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 230431211 - 2² = 230431207 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 230431211.

It is not an unprimeable number, because it can be changed into a prime (230431231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53285 + ... + 57446.

It is an arithmetic number, because the mean of its divisors is an integer number (57636006).

Almost surely, 2^230431211 is an apocalyptic number.

230431211 is a deficient number, since it is larger than the sum of its proper divisors (112813).

230431211 is a wasteful number, since it uses less digits than its factorization.

230431211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112812.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 230431211 is about 15179.9608365766. The cubic root of 230431211 is about 613.0752267063.

Adding to 230431211 its reverse (112134032), we get a palindrome (342565243).

The spelling of 230431211 in words is "two hundred thirty million, four hundred thirty-one thousand, two hundred eleven".