1131243324111 has 8 divisors (see below), whose sum is σ = 1675916035760. Its totient is φ = 754162216056.

The previous prime is 1131243324089. The next prime is 1131243324121. The reversal of 1131243324111 is 1114233421311.

1131243324111 is a `hidden beast` number, since 1 + 1 + 3 + 1 + 243 + 3 + 2 + 411 + 1 = 666.

It is not a de Polignac number, because 1131243324111 - 2⁶ = 1131243324047 is a prime.

It is a super-2 number, since 2×1131243324111² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 41897900893 = 1131243324111 / (1 + 1 + 3 + 1 + 2 + 4 + 3 + 3 + 2 + 4 + 1 + 1 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131243324121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20948950420 + ... + 20948950473.

It is an arithmetic number, because the mean of its divisors is an integer number (209489504470).

Almost surely, 2^{1131243324111} is an apocalyptic number.

1131243324111 is a deficient number, since it is larger than the sum of its proper divisors (544672711649).

1131243324111 is an equidigital number, since it uses as much as digits as its factorization.

1131243324111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41897900902 (or 41897900896 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

Adding to 1131243324111 its reverse (1114233421311), we get a palindrome (2245476745422).

The spelling of 1131243324111 in words is "one trillion, one hundred thirty-one billion, two hundred forty-three million, three hundred twenty-four thousand, one hundred eleven".