1344021331 has 4 divisors (see below), whose sum is σ = 1344162600. Its totient is φ = 1343880064.

The previous prime is 1344021319. The next prime is 1344021347. The reversal of 1344021331 is 1331204431.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1344021331 - 2⁵ = 1344021299 is a prime.

It is a super-2 number, since 2×1344021331² = 3612786676366023122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1344021311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55246 + ... + 75763.

It is an arithmetic number, because the mean of its divisors is an integer number (336040650).

Almost surely, 2^1344021331 is an apocalyptic number.

1344021331 is a deficient number, since it is larger than the sum of its proper divisors (141269).

1344021331 is a wasteful number, since it uses less digits than its factorization.

1344021331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141268.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 1344021331 is about 36660.8964838559. The cubic root of 1344021331 is about 1103.5755088759.

Adding to 1344021331 its reverse (1331204431), we get a palindrome (2675225762).

The spelling of 1344021331 in words is "one billion, three hundred forty-four million, twenty-one thousand, three hundred thirty-one".