233143112011 has 4 divisors (see below), whose sum is σ = 233519757400. Its totient is φ = 232766466624.

The previous prime is 233143111987. The next prime is 233143112021. The reversal of 233143112011 is 110211341332.

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 233143112011 - 2²¹ = 233141014859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (233143112021) 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, 188321766 + ... + 188323003.

It is an arithmetic number, because the mean of its divisors is an integer number (58379939350).

Almost surely, 2^233143112011 is an apocalyptic number.

233143112011 is a deficient number, since it is larger than the sum of its proper divisors (376645389).

233143112011 is an equidigital number, since it uses as much as digits as its factorization.

233143112011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376645388.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 233143112011 its reverse (110211341332), we get a palindrome (343354453343).

The spelling of 233143112011 in words is "two hundred thirty-three billion, one hundred forty-three million, one hundred twelve thousand, eleven".