1131443141 has 4 divisors (see below), whose sum is σ = 1190992800. Its totient is φ = 1071893484.

The previous prime is 1131443119. The next prime is 1131443197. The reversal of 1131443141 is 1413441311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1131443141 - 2⁶ = 1131443077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131443641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29774801 + ... + 29774838.

It is an arithmetic number, because the mean of its divisors is an integer number (297748200).

Almost surely, 2^1131443141 is an apocalyptic number.

It is an amenable number.

1131443141 is a deficient number, since it is larger than the sum of its proper divisors (59549659).

1131443141 is an equidigital number, since it uses as much as digits as its factorization.

1131443141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59549658.

The product of its digits is 576, while the sum is 23.

The square root of 1131443141 is about 33636.9312066366. The cubic root of 1131443141 is about 1042.0236550026.

Adding to 1131443141 its reverse (1413441311), we get a palindrome (2544884452).

The spelling of 1131443141 in words is "one billion, one hundred thirty-one million, four hundred forty-three thousand, one hundred forty-one".