1320541433 has 4 divisors (see below), whose sum is σ = 1356231780. Its totient is φ = 1284851088.

The previous prime is 1320541373. The next prime is 1320541447. The reversal of 1320541433 is 3341450231.

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

It can be written as a sum of positive squares in 2 ways, for example, as 915244009 + 405297424 = 30253^2 + 20132^2 .

It is a cyclic number.

It is not a de Polignac number, because 1320541433 - 2¹⁰ = 1320540409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1320541133) 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, 17845118 + ... + 17845191.

It is an arithmetic number, because the mean of its divisors is an integer number (339057945).

Almost surely, 2^1320541433 is an apocalyptic number.

It is an amenable number.

1320541433 is a deficient number, since it is larger than the sum of its proper divisors (35690347).

1320541433 is an equidigital number, since it uses as much as digits as its factorization.

1320541433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35690346.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 1320541433 is about 36339.2547116751. The cubic root of 1320541433 is about 1097.1112725739. Note that the first 3 decimals are identical.

Adding to 1320541433 its reverse (3341450231), we get a palindrome (4661991664).

The spelling of 1320541433 in words is "one billion, three hundred twenty million, five hundred forty-one thousand, four hundred thirty-three".