1131250441 has 4 divisors (see below), whose sum is σ = 1133875584. Its totient is φ = 1128625300.

The previous prime is 1131250433. The next prime is 1131250447. The reversal of 1131250441 is 1440521311.

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 1131250441 - 2³ = 1131250433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131250447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1311925 + ... + 1312786.

It is an arithmetic number, because the mean of its divisors is an integer number (283468896).

Almost surely, 2^1131250441 is an apocalyptic number.

It is an amenable number.

1131250441 is a deficient number, since it is larger than the sum of its proper divisors (2625143).

1131250441 is an equidigital number, since it uses as much as digits as its factorization.

1131250441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2625142.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 1131250441 is about 33634.0666735380. The cubic root of 1131250441 is about 1041.9644947580.

Adding to 1131250441 its reverse (1440521311), we get a palindrome (2571771752).

The spelling of 1131250441 in words is "one billion, one hundred thirty-one million, two hundred fifty thousand, four hundred forty-one".