231442241 has 4 divisors (see below), whose sum is σ = 236366592. Its totient is φ = 226517892.

The previous prime is 231442231. The next prime is 231442273. The reversal of 231442241 is 142244132.

231442241 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231442241 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (231442231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2462105 + ... + 2462198.

It is an arithmetic number, because the mean of its divisors is an integer number (59091648).

Almost surely, 2^231442241 is an apocalyptic number.

It is an amenable number.

231442241 is a deficient number, since it is larger than the sum of its proper divisors (4924351).

231442241 is an equidigital number, since it uses as much as digits as its factorization.

231442241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4924350.

The product of its digits is 1536, while the sum is 23.

The square root of 231442241 is about 15213.2258577857. The cubic root of 231442241 is about 613.9705526520.

Adding to 231442241 its reverse (142244132), we get a palindrome (373686373).

The spelling of 231442241 in words is "two hundred thirty-one million, four hundred forty-two thousand, two hundred forty-one".