1105143321 has 4 divisors (see below), whose sum is σ = 1473524432. Its totient is φ = 736762212.

The previous prime is 1105143311. The next prime is 1105143323. The reversal of 1105143321 is 1233415011.

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.

It is not a de Polignac number, because 1105143321 - 2¹⁸ = 1104881177 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1105143323) 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, 184190551 + ... + 184190556.

It is an arithmetic number, because the mean of its divisors is an integer number (368381108).

Almost surely, 2^1105143321 is an apocalyptic number.

It is an amenable number.

1105143321 is a deficient number, since it is larger than the sum of its proper divisors (368381111).

1105143321 is an equidigital number, since it uses as much as digits as its factorization.

1105143321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368381110.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1105143321 is about 33243.6959587829. The cubic root of 1105143321 is about 1033.8865076896.

Adding to 1105143321 its reverse (1233415011), we get a palindrome (2338558332).

The spelling of 1105143321 in words is "one billion, one hundred five million, one hundred forty-three thousand, three hundred twenty-one".