1144243111 has 16 divisors (see below), whose sum is σ = 1294768800. Its totient is φ = 1001660800.

The previous prime is 1144243091. The next prime is 1144243117. The reversal of 1144243111 is 1113424411.

It is a cyclic number.

It is not a de Polignac number, because 1144243111 - 2²⁵ = 1110688679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144243117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119481 + ... + 128701.

It is an arithmetic number, because the mean of its divisors is an integer number (80923050).

Almost surely, 2^1144243111 is an apocalyptic number.

1144243111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1144243111 is a deficient number, since it is larger than the sum of its proper divisors (150525689).

1144243111 is a wasteful number, since it uses less digits than its factorization.

1144243111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9650.

The product of its digits is 384, while the sum is 22.

The square root of 1144243111 is about 33826.6627233607. The cubic root of 1144243111 is about 1045.9383865110.

Adding to 1144243111 its reverse (1113424411), we get a palindrome (2257667522).

The spelling of 1144243111 in words is "one billion, one hundred forty-four million, two hundred forty-three thousand, one hundred eleven".