1143520343 has 8 divisors (see below), whose sum is σ = 1349038080. Its totient is φ = 948542040.

The previous prime is 1143520321. The next prime is 1143520363. The reversal of 1143520343 is 3430253411.

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 1143520343 - 2¹⁰ = 1143519319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143520303) 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, 2634623 + ... + 2635056.

It is an arithmetic number, because the mean of its divisors is an integer number (168629760).

Almost surely, 2^1143520343 is an apocalyptic number.

1143520343 is a deficient number, since it is larger than the sum of its proper divisors (205517737).

1143520343 is an equidigital number, since it uses as much as digits as its factorization.

1143520343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5269717.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 1143520343 is about 33815.9776289256. The cubic root of 1143520343 is about 1045.7181157150.

Adding to 1143520343 its reverse (3430253411), we get a palindrome (4573773754).

The spelling of 1143520343 in words is "one billion, one hundred forty-three million, five hundred twenty thousand, three hundred forty-three".