1143440011 has 8 divisors (see below), whose sum is σ = 1307353824. Its totient is φ = 979667520.

The previous prime is 1143440003. The next prime is 1143440041. The reversal of 1143440011 is 1100443411.

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 1143440011 - 2³ = 1143440003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1143440041) 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, 17380 + ... + 50881.

It is an arithmetic number, because the mean of its divisors is an integer number (163419228).

Almost surely, 2^1143440011 is an apocalyptic number.

1143440011 is a deficient number, since it is larger than the sum of its proper divisors (163913813).

1143440011 is an equidigital number, since it uses as much as digits as its factorization.

1143440011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70661.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1143440011 is about 33814.7898263467. The cubic root of 1143440011 is about 1045.6936280017.

Adding to 1143440011 its reverse (1100443411), we get a palindrome (2243883422).

The spelling of 1143440011 in words is "one billion, one hundred forty-three million, four hundred forty thousand, eleven".