1331125443 has 6 divisors (see below), whose sum is σ = 1922736764. Its totient is φ = 887416956.

The previous prime is 1331125429. The next prime is 1331125447. The reversal of 1331125443 is 3445211331.

It is a happy number.

1331125443 is a `hidden beast` number, since 1 + 3 + 3 + 112 + 544 + 3 = 666.

It is not a de Polignac number, because 1331125443 - 2¹⁰ = 1331124419 is a prime.

It is a super-3 number, since 3×1331125443³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1331125447) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 73951405 + ... + 73951422.

Almost surely, 2^1331125443 is an apocalyptic number.

1331125443 is a deficient number, since it is larger than the sum of its proper divisors (591611321).

1331125443 is a wasteful number, since it uses less digits than its factorization.

1331125443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147902833 (or 147902830 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 1331125443 is about 36484.5918573855. The cubic root of 1331125443 is about 1100.0345562147.

Adding to 1331125443 its reverse (3445211331), we get a palindrome (4776336774).

The spelling of 1331125443 in words is "one billion, three hundred thirty-one million, one hundred twenty-five thousand, four hundred forty-three".