231251233 has 4 divisors (see below), whose sum is σ = 236171520. Its totient is φ = 226330948.

The previous prime is 231251231. The next prime is 231251257. The reversal of 231251233 is 332152132.

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 not a de Polignac number, because 231251233 - 2¹ = 231251231 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231251231) 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, 2460073 + ... + 2460166.

It is an arithmetic number, because the mean of its divisors is an integer number (59042880).

Almost surely, 2^231251233 is an apocalyptic number.

It is an amenable number.

231251233 is a deficient number, since it is larger than the sum of its proper divisors (4920287).

231251233 is an equidigital number, since it uses as much as digits as its factorization.

231251233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4920286.

The product of its digits is 1080, while the sum is 22.

The square root of 231251233 is about 15206.9468664818. The cubic root of 231251233 is about 613.8016040001.

The spelling of 231251233 in words is "two hundred thirty-one million, two hundred fifty-one thousand, two hundred thirty-three".