1143233111 has 2 divisors, whose sum is σ = 1143233112. Its totient is φ = 1143233110.

The previous prime is 1143233087. The next prime is 1143233137. The reversal of 1143233111 is 1113323411.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1143233111 - 2¹⁰ = 1143232087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1143233171) 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 as a sum of consecutive naturals, namely, 571616555 + 571616556.

It is an arithmetic number, because the mean of its divisors is an integer number (571616556).

Almost surely, 2^1143233111 is an apocalyptic number.

1143233111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143233111 is an equidigital number, since it uses as much as digits as its factorization.

1143233111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216, while the sum is 20.

The square root of 1143233111 is about 33811.7303757143. The cubic root of 1143233111 is about 1045.6305531107.

Adding to 1143233111 its reverse (1113323411), we get a palindrome (2256556522).

The spelling of 1143233111 in words is "one billion, one hundred forty-three million, two hundred thirty-three thousand, one hundred eleven".