1131340241 has 4 divisors (see below), whose sum is σ = 1132462500. Its totient is φ = 1130217984.

The previous prime is 1131340219. The next prime is 1131340267. The reversal of 1131340241 is 1420431311.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 181467841 + 949872400 = 13471^2 + 30820^2 .

It is a cyclic number.

It is not a de Polignac number, because 1131340241 - 2²² = 1127145937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131340201) 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, 559616 + ... + 561633.

It is an arithmetic number, because the mean of its divisors is an integer number (283115625).

Almost surely, 2^1131340241 is an apocalyptic number.

It is an amenable number.

1131340241 is a deficient number, since it is larger than the sum of its proper divisors (1122259).

1131340241 is a wasteful number, since it uses less digits than its factorization.

1131340241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1122258.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1131340241 is about 33635.4016030729. The cubic root of 1131340241 is about 1041.9920648205.

Adding to 1131340241 its reverse (1420431311), we get a palindrome (2551771552).

The spelling of 1131340241 in words is "one billion, one hundred thirty-one million, three hundred forty thousand, two hundred forty-one".