11443197331 has 2 divisors, whose sum is σ = 11443197332. Its totient is φ = 11443197330.

The previous prime is 11443197257. The next prime is 11443197361. The reversal of 11443197331 is 13379134411.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11443197331 - 2⁹ = 11443196819 is a prime.

It is a super-2 number, since 2×11443197331² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11443197361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5721598665 + 5721598666.

It is an arithmetic number, because the mean of its divisors is an integer number (5721598666).

Almost surely, 2^11443197331 is an apocalyptic number.

11443197331 is a deficient number, since it is larger than the sum of its proper divisors (1).

11443197331 is an equidigital number, since it uses as much as digits as its factorization.

11443197331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 37.

The spelling of 11443197331 in words is "eleven billion, four hundred forty-three million, one hundred ninety-seven thousand, three hundred thirty-one".