1321160441 has 4 divisors (see below), whose sum is σ = 1322611584. Its totient is φ = 1319709300.

The previous prime is 1321160437. The next prime is 1321160447. The reversal of 1321160441 is 1440611231.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1440611231 = 14759 ⋅97609.

It is a cyclic number.

It is not a de Polignac number, because 1321160441 - 2² = 1321160437 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1321160447) 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, 724205 + ... + 726026.

It is an arithmetic number, because the mean of its divisors is an integer number (330652896).

Almost surely, 2^1321160441 is an apocalyptic number.

It is an amenable number.

1321160441 is a deficient number, since it is larger than the sum of its proper divisors (1451143).

1321160441 is an equidigital number, since it uses as much as digits as its factorization.

1321160441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1451142.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 1321160441 is about 36347.7707844649. The cubic root of 1321160441 is about 1097.2826705960.

Adding to 1321160441 its reverse (1440611231), we get a palindrome (2761771672).

The spelling of 1321160441 in words is "one billion, three hundred twenty-one million, one hundred sixty thousand, four hundred forty-one".