1143111133 has 4 divisors (see below), whose sum is σ = 1143249408. Its totient is φ = 1142972860.

The previous prime is 1143111131. The next prime is 1143111139. The reversal of 1143111133 is 3311113411.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3311113411 = 11393 ⋅290627.

It is a cyclic number.

It is not a de Polignac number, because 1143111133 - 2¹ = 1143111131 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1143111133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143111131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55891 + ... + 73552.

It is an arithmetic number, because the mean of its divisors is an integer number (285812352).

Almost surely, 2^1143111133 is an apocalyptic number.

It is an amenable number.

1143111133 is a deficient number, since it is larger than the sum of its proper divisors (138275).

1143111133 is an equidigital number, since it uses as much as digits as its factorization.

1143111133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138274.

The product of its digits is 108, while the sum is 19.

The square root of 1143111133 is about 33809.9265453210. The cubic root of 1143111133 is about 1045.5933637108.

Adding to 1143111133 its reverse (3311113411), we get a palindrome (4454224544).

The spelling of 1143111133 in words is "one billion, one hundred forty-three million, one hundred eleven thousand, one hundred thirty-three".