1131233141 has 2 divisors, whose sum is σ = 1131233142. Its totient is φ = 1131233140.

The previous prime is 1131233119. The next prime is 1131233143. The reversal of 1131233141 is 1413321311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 836424241 + 294808900 = 28921^2 + 17170^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1131233141 is a prime.

Together with 1131233143, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1131233143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565616570 + 565616571.

It is an arithmetic number, because the mean of its divisors is an integer number (565616571).

Almost surely, 2^1131233141 is an apocalyptic number.

It is an amenable number.

1131233141 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131233141 is an equidigital number, since it uses as much as digits as its factorization.

1131233141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216, while the sum is 20.

The square root of 1131233141 is about 33633.8094928303. The cubic root of 1131233141 is about 1041.9591832087.

Adding to 1131233141 its reverse (1413321311), we get a palindrome (2544554452).

The spelling of 1131233141 in words is "one billion, one hundred thirty-one million, two hundred thirty-three thousand, one hundred forty-one".