1331119428 has 12 divisors (see below), whose sum is σ = 3105945360. Its totient is φ = 443706472.

The previous prime is 1331119417. The next prime is 1331119429. The reversal of 1331119428 is 8249111331.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (1331119429) 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, 55463298 + ... + 55463321.

It is an arithmetic number, because the mean of its divisors is an integer number (258828780).

Almost surely, 2^1331119428 is an apocalyptic number.

It is an amenable number.

1331119428 is an abundant number, since it is smaller than the sum of its proper divisors (1774825932).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1331119428 is a wasteful number, since it uses less digits than its factorization.

1331119428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110926626 (or 110926624 counting only the distinct ones).

The product of its digits is 5184, while the sum is 33.

The square root of 1331119428 is about 36484.5094252342. The cubic root of 1331119428 is about 1100.0328992915.

The spelling of 1331119428 in words is "one billion, three hundred thirty-one million, one hundred nineteen thousand, four hundred twenty-eight".