1320540213 has 8 divisors (see below), whose sum is σ = 1762228576. Its totient is φ = 879606000.

The previous prime is 1320540197. The next prime is 1320540241. The reversal of 1320540213 is 3120450231.

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

It is not a de Polignac number, because 1320540213 - 2⁴ = 1320540197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1320540213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320540283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 184438 + ... + 191463.

It is an arithmetic number, because the mean of its divisors is an integer number (220278572).

Almost surely, 2^1320540213 is an apocalyptic number.

It is an amenable number.

1320540213 is a deficient number, since it is larger than the sum of its proper divisors (441688363).

1320540213 is a wasteful number, since it uses less digits than its factorization.

1320540213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377075.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 1320540213 is about 36339.2379254161. The cubic root of 1320540213 is about 1097.1109347135.

Adding to 1320540213 its reverse (3120450231), we get a palindrome (4440990444).

The spelling of 1320540213 in words is "one billion, three hundred twenty million, five hundred forty thousand, two hundred thirteen".