1343432221 has 16 divisors (see below), whose sum is σ = 1467259200. Its totient is φ = 1225179648.

The previous prime is 1343432203. The next prime is 1343432227. The reversal of 1343432221 is 1222343431.

It is a cyclic number.

It is not a de Polignac number, because 1343432221 - 2⁹ = 1343431709 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 (1343432227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 191050 + ... + 197956.

It is an arithmetic number, because the mean of its divisors is an integer number (91703700).

Almost surely, 2^1343432221 is an apocalyptic number.

It is an amenable number.

1343432221 is a deficient number, since it is larger than the sum of its proper divisors (123826979).

1343432221 is a wasteful number, since it uses less digits than its factorization.

1343432221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7308.

The product of its digits is 3456, while the sum is 25.

The square root of 1343432221 is about 36652.8610206625. The cubic root of 1343432221 is about 1103.4142459644.

Adding to 1343432221 its reverse (1222343431), we get a palindrome (2565775652).

The spelling of 1343432221 in words is "one billion, three hundred forty-three million, four hundred thirty-two thousand, two hundred twenty-one".