1143523471 has 4 divisors (see below), whose sum is σ = 1143593344. Its totient is φ = 1143453600.

The previous prime is 1143523457. The next prime is 1143523481. The reversal of 1143523471 is 1743253411.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1143523471 - 2⁵ = 1143523439 is a prime.

It is a super-3 number, since 3×1143523471³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143523441) 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, 4306 + ... + 48016.

It is an arithmetic number, because the mean of its divisors is an integer number (285898336).

Almost surely, 2^1143523471 is an apocalyptic number.

1143523471 is a deficient number, since it is larger than the sum of its proper divisors (69873).

1143523471 is an equidigital number, since it uses as much as digits as its factorization.

1143523471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69872.

The product of its digits is 10080, while the sum is 31.

The square root of 1143523471 is about 33816.0238792203. The cubic root of 1143523471 is about 1045.7190692043.

Adding to 1143523471 its reverse (1743253411), we get a palindrome (2886776882).

The spelling of 1143523471 in words is "one billion, one hundred forty-three million, five hundred twenty-three thousand, four hundred seventy-one".