1131201123331 has 2 divisors, whose sum is σ = 1131201123332. Its totient is φ = 1131201123330.

The previous prime is 1131201123257. The next prime is 1131201123343. The reversal of 1131201123331 is 1333211021311.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1131201123331 is a prime.

It is a super-2 number, since 2×1131201123331² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1131201123931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565600561665 + 565600561666.

It is an arithmetic number, because the mean of its divisors is an integer number (565600561666).

Almost surely, 2^{1131201123331} is an apocalyptic number.

1131201123331 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131201123331 is an equidigital number, since it uses as much as digits as its factorization.

1131201123331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 1131201123331 its reverse (1333211021311), we get a palindrome (2464412144642).

The spelling of 1131201123331 in words is "one trillion, one hundred thirty-one billion, two hundred one million, one hundred twenty-three thousand, three hundred thirty-one".