1143320341 has 4 divisors (see below), whose sum is σ = 1143391500. Its totient is φ = 1143249184.

The previous prime is 1143320323. The next prime is 1143320357. The reversal of 1143320341 is 1430233411.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1430233411 = 139 ⋅10289449.

It can be written as a sum of positive squares in 2 ways, for example, as 916817841 + 226502500 = 30279^2 + 15050^2 .

It is a cyclic number.

It is not a de Polignac number, because 1143320341 - 2⁵ = 1143320309 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 (1143300341) 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, 1185 + ... + 47833.

It is an arithmetic number, because the mean of its divisors is an integer number (285847875).

Almost surely, 2^1143320341 is an apocalyptic number.

It is an amenable number.

1143320341 is a deficient number, since it is larger than the sum of its proper divisors (71159).

1143320341 is an equidigital number, since it uses as much as digits as its factorization.

1143320341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71158.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 1143320341 is about 33813.0202880488. The cubic root of 1143320341 is about 1045.6571467052.

Adding to 1143320341 its reverse (1430233411), we get a palindrome (2573553752).

The spelling of 1143320341 in words is "one billion, one hundred forty-three million, three hundred twenty thousand, three hundred forty-one".