1143211113 has 48 divisors (see below), whose sum is σ = 1915415424. Its totient is φ = 650158080.

The previous prime is 1143211109. The next prime is 1143211123. The reversal of 1143211113 is 3111123411.

It is a happy number.

It is not a de Polignac number, because 1143211113 - 2² = 1143211109 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1143211103) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 115945 + ... + 125417.

It is an arithmetic number, because the mean of its divisors is an integer number (39904488).

Almost surely, 2^1143211113 is an apocalyptic number.

It is an amenable number.

1143211113 is a deficient number, since it is larger than the sum of its proper divisors (772204311).

1143211113 is a wasteful number, since it uses less digits than its factorization.

1143211113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9566 (or 9563 counting only the distinct ones).

The product of its digits is 72, while the sum is 18.

The square root of 1143211113 is about 33811.4050728449. The cubic root of 1143211113 is about 1045.6238464212.

Adding to 1143211113 its reverse (3111123411), we get a palindrome (4254334524).

The spelling of 1143211113 in words is "one billion, one hundred forty-three million, two hundred eleven thousand, one hundred thirteen".