1131011331443 has 12 divisors (see below), whose sum is σ = 1316174173632. Its totient is φ = 969064019280.

The previous prime is 1131011331421. The next prime is 1131011331493. The reversal of 1131011331443 is 3441331101311.

It is not a de Polignac number, because 1131011331443 - 2⁶ = 1131011331379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131011331403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4327280 + ... + 4581197.

It is an arithmetic number, because the mean of its divisors is an integer number (109681181136).

Almost surely, 2^{1131011331443} is an apocalyptic number.

1131011331443 is a deficient number, since it is larger than the sum of its proper divisors (185162842189).

1131011331443 is an equidigital number, since it uses as much as digits as its factorization.

1131011331443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8911082 (or 8911075 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

Adding to 1131011331443 its reverse (3441331101311), we get a palindrome (4572342432754).

The spelling of 1131011331443 in words is "one trillion, one hundred thirty-one billion, eleven million, three hundred thirty-one thousand, four hundred forty-three".