1343260221 has 4 divisors (see below), whose sum is σ = 1791013632. Its totient is φ = 895506812.

The previous prime is 1343260189. The next prime is 1343260231. The reversal of 1343260221 is 1220623431.

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 1343260221 - 2⁵ = 1343260189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1343260191 and 1343260200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1343260231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 223876701 + ... + 223876706.

It is an arithmetic number, because the mean of its divisors is an integer number (447753408).

Almost surely, 2^1343260221 is an apocalyptic number.

It is an amenable number.

1343260221 is a deficient number, since it is larger than the sum of its proper divisors (447753411).

1343260221 is an equidigital number, since it uses as much as digits as its factorization.

1343260221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447753410.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 1343260221 is about 36650.5146075741. The cubic root of 1343260221 is about 1103.3671538106.

Adding to 1343260221 its reverse (1220623431), we get a palindrome (2563883652).

The spelling of 1343260221 in words is "one billion, three hundred forty-three million, two hundred sixty thousand, two hundred twenty-one".