1143053511 has 4 divisors (see below), whose sum is σ = 1524071352. Its totient is φ = 762035672.

The previous prime is 1143053479. The next prime is 1143053533. The reversal of 1143053511 is 1153503411.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1143053511 - 2⁵ = 1143053479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143053581) 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 in 3 ways as a sum of consecutive naturals, for example, 190508916 + ... + 190508921.

It is an arithmetic number, because the mean of its divisors is an integer number (381017838).

Almost surely, 2^1143053511 is an apocalyptic number.

1143053511 is a deficient number, since it is larger than the sum of its proper divisors (381017841).

1143053511 is an equidigital number, since it uses as much as digits as its factorization.

1143053511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381017840.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 1143053511 is about 33809.0743883946. The cubic root of 1143053511 is about 1045.5757946423.

Adding to 1143053511 its reverse (1153503411), we get a palindrome (2296556922).

The spelling of 1143053511 in words is "one billion, one hundred forty-three million, fifty-three thousand, five hundred eleven".