1344432321 has 12 divisors (see below), whose sum is σ = 1983276672. Its totient is φ = 877217976.

The previous prime is 1344432307. The next prime is 1344432337. The reversal of 1344432321 is 1232344431.

It is not a de Polignac number, because 1344432321 - 2⁵ = 1344432289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1344432391) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1588741 + ... + 1589586.

It is an arithmetic number, because the mean of its divisors is an integer number (165273056).

Almost surely, 2^1344432321 is an apocalyptic number.

It is an amenable number.

1344432321 is a deficient number, since it is larger than the sum of its proper divisors (638844351).

1344432321 is a wasteful number, since it uses less digits than its factorization.

1344432321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3178380 (or 3178377 counting only the distinct ones).

The product of its digits is 6912, while the sum is 27.

The square root of 1344432321 is about 36666.5013465970. The cubic root of 1344432321 is about 1103.6879853335.

Adding to 1344432321 its reverse (1232344431), we get a palindrome (2576776752).

The spelling of 1344432321 in words is "one billion, three hundred forty-four million, four hundred thirty-two thousand, three hundred twenty-one".