1331443244 has 12 divisors (see below), whose sum is σ = 2410371600. Its totient is φ = 642765648.

The previous prime is 1331443231. The next prime is 1331443283. The reversal of 1331443244 is 4423441331.

It is a happy number.

It is a super-2 number, since 2×1331443244² = 3545482223986487072, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5738864 + ... + 5739095.

It is an arithmetic number, because the mean of its divisors is an integer number (200864300).

Almost surely, 2^1331443244 is an apocalyptic number.

It is an amenable number.

1331443244 is a deficient number, since it is larger than the sum of its proper divisors (1078928356).

1331443244 is a wasteful number, since it uses less digits than its factorization.

1331443244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11477992 (or 11477990 counting only the distinct ones).

The product of its digits is 13824, while the sum is 29.

The square root of 1331443244 is about 36488.9468743618. The cubic root of 1331443244 is about 1100.1220922332.

Adding to 1331443244 its reverse (4423441331), we get a palindrome (5754884575).

The spelling of 1331443244 in words is "one billion, three hundred thirty-one million, four hundred forty-three thousand, two hundred forty-four".