1131244041 has 4 divisors (see below), whose sum is σ = 1508325392. Its totient is φ = 754162692.

The previous prime is 1131244001. The next prime is 1131244061. The reversal of 1131244041 is 1404421311.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1404421311 = 3 ⋅468140437.

It is not a de Polignac number, because 1131244041 - 2²⁷ = 997026313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1131243999 and 1131244017.

It is not an unprimeable number, because it can be changed into a prime (1131244001) 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, 188540671 + ... + 188540676.

It is an arithmetic number, because the mean of its divisors is an integer number (377081348).

Almost surely, 2^1131244041 is an apocalyptic number.

It is an amenable number.

1131244041 is a deficient number, since it is larger than the sum of its proper divisors (377081351).

1131244041 is an equidigital number, since it uses as much as digits as its factorization.

1131244041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377081350.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 1131244041 is about 33633.9715317713. The cubic root of 1131244041 is about 1041.9625297981.

Adding to 1131244041 its reverse (1404421311), we get a palindrome (2535665352).

The spelling of 1131244041 in words is "one billion, one hundred thirty-one million, two hundred forty-four thousand, forty-one".