1331141443 has 4 divisors (see below), whose sum is σ = 1331306080. Its totient is φ = 1330976808.

The previous prime is 1331141419. The next prime is 1331141477. The reversal of 1331141443 is 3441411331.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3441411331 = 16943 ⋅203117.

It is a cyclic number.

It is not a de Polignac number, because 1331141443 - 2²¹ = 1329044291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1331141143) 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, 69528 + ... + 86581.

It is an arithmetic number, because the mean of its divisors is an integer number (332826520).

Almost surely, 2^1331141443 is an apocalyptic number.

1331141443 is a deficient number, since it is larger than the sum of its proper divisors (164637).

1331141443 is an equidigital number, since it uses as much as digits as its factorization.

1331141443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164636.

The product of its digits is 1728, while the sum is 25.

The square root of 1331141443 is about 36484.8111273719. The cubic root of 1331141443 is about 1100.0389636336.

Adding to 1331141443 its reverse (3441411331), we get a palindrome (4772552774).

The spelling of 1331141443 in words is "one billion, three hundred thirty-one million, one hundred forty-one thousand, four hundred forty-three".