1321160433 has 4 divisors (see below), whose sum is σ = 1761547248. Its totient is φ = 880773620.

The previous prime is 1321160431. The next prime is 1321160437. The reversal of 1321160433 is 3340611231.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 1321160433 - 2¹ = 1321160431 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1321160431) 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, 220193403 + ... + 220193408.

It is an arithmetic number, because the mean of its divisors is an integer number (440386812).

Almost surely, 2^1321160433 is an apocalyptic number.

It is an amenable number.

1321160433 is a deficient number, since it is larger than the sum of its proper divisors (440386815).

1321160433 is an equidigital number, since it uses as much as digits as its factorization.

1321160433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440386814.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 1321160433 is about 36347.7706744169. The cubic root of 1321160433 is about 1097.2826683812.

Adding to 1321160433 its reverse (3340611231), we get a palindrome (4661771664).

The spelling of 1321160433 in words is "one billion, three hundred twenty-one million, one hundred sixty thousand, four hundred thirty-three".