231143233 has 8 divisors (see below), whose sum is σ = 234949248. Its totient is φ = 227347824.

The previous prime is 231143201. The next prime is 231143243. The reversal of 231143233 is 332341132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 231143233 - 2⁵ = 231143201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231143243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49560 + ... + 54022.

It is an arithmetic number, because the mean of its divisors is an integer number (29368656).

Almost surely, 2^231143233 is an apocalyptic number.

It is an amenable number.

231143233 is a deficient number, since it is larger than the sum of its proper divisors (3806015).

231143233 is an equidigital number, since it uses as much as digits as its factorization.

231143233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5303.

The product of its digits is 1296, while the sum is 22.

The square root of 231143233 is about 15203.3954431239. The cubic root of 231143233 is about 613.7060356510.

Adding to 231143233 its reverse (332341132), we get a palindrome (563484365).

The spelling of 231143233 in words is "two hundred thirty-one million, one hundred forty-three thousand, two hundred thirty-three".