1321143441 has 8 divisors (see below), whose sum is σ = 1761695040. Its totient is φ = 880677072.

The previous prime is 1321143433. The next prime is 1321143463. The reversal of 1321143441 is 1443411231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1321143441 - 2³ = 1321143433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1321143641) 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, 40375 + ... + 65363.

It is an arithmetic number, because the mean of its divisors is an integer number (220211880).

Almost surely, 2^1321143441 is an apocalyptic number.

It is an amenable number.

1321143441 is a deficient number, since it is larger than the sum of its proper divisors (440551599).

1321143441 is a wasteful number, since it uses less digits than its factorization.

1321143441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42615.

The product of its digits is 1152, while the sum is 24.

The square root of 1321143441 is about 36347.5369316822. The cubic root of 1321143441 is about 1097.2779641564.

Adding to 1321143441 its reverse (1443411231), we get a palindrome (2764554672).

The spelling of 1321143441 in words is "one billion, three hundred twenty-one million, one hundred forty-three thousand, four hundred forty-one".