1043321043 has 4 divisors (see below), whose sum is σ = 1391094728. Its totient is φ = 695547360.

The previous prime is 1043321033. The next prime is 1043321057. The reversal of 1043321043 is 3401233401.

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

It is not a de Polignac number, because 1043321043 - 2⁶ = 1043320979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1043321033) 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, 173886838 + ... + 173886843.

It is an arithmetic number, because the mean of its divisors is an integer number (347773682).

Almost surely, 2^1043321043 is an apocalyptic number.

1043321043 is a deficient number, since it is larger than the sum of its proper divisors (347773685).

1043321043 is an equidigital number, since it uses as much as digits as its factorization.

1043321043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347773684.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 1043321043 is about 32300.4805382211. The cubic root of 1043321043 is about 1014.2367021300.

Adding to 1043321043 its reverse (3401233401), we get a palindrome (4444554444).

The spelling of 1043321043 in words is "one billion, forty-three million, three hundred twenty-one thousand, forty-three".