1345442213 has 4 divisors (see below), whose sum is σ = 1346745708. Its totient is φ = 1344138720.

The previous prime is 1345442207. The next prime is 1345442221. The reversal of 1345442213 is 3122445431.

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 1158245089 + 187197124 = 34033^2 + 13682^2 .

It is a cyclic number.

It is not a de Polignac number, because 1345442213 - 2¹² = 1345438117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345442233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 650198 + ... + 652263.

It is an arithmetic number, because the mean of its divisors is an integer number (336686427).

Almost surely, 2^1345442213 is an apocalyptic number.

It is an amenable number.

1345442213 is a deficient number, since it is larger than the sum of its proper divisors (1303495).

1345442213 is a wasteful number, since it uses less digits than its factorization.

1345442213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1303494.

The product of its digits is 11520, while the sum is 29.

The square root of 1345442213 is about 36680.2700780679. The cubic root of 1345442213 is about 1103.9642671716.

Adding to 1345442213 its reverse (3122445431), we get a palindrome (4467887644).

The spelling of 1345442213 in words is "one billion, three hundred forty-five million, four hundred forty-two thousand, two hundred thirteen".