1131240411 has 80 divisors (see below), whose sum is σ = 2075392000. Its totient is φ = 612115056.

The previous prime is 1131240403. The next prime is 1131240443. The reversal of 1131240411 is 1140421311.

1131240411 is a `hidden beast` number, since 1 + 13 + 1 + 240 + 411 = 666.

It is not a de Polignac number, because 1131240411 - 2³ = 1131240403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131240311) 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 in 79 ways as a sum of consecutive naturals, for example, 526806 + ... + 528948.

It is an arithmetic number, because the mean of its divisors is an integer number (25942400).

Almost surely, 2^1131240411 is an apocalyptic number.

1131240411 is a deficient number, since it is larger than the sum of its proper divisors (944151589).

1131240411 is an equidigital number, since it uses as much as digits as its factorization.

1131240411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2195 (or 2172 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 1131240411 is about 33633.9175684308. The cubic root of 1131240411 is about 1041.9614152941.

Adding to 1131240411 its reverse (1140421311), we get a palindrome (2271661722).

Subtracting 1131240411 from its reverse (1140421311), we obtain a square (9180900 = 3030²).

The spelling of 1131240411 in words is "one billion, one hundred thirty-one million, two hundred forty thousand, four hundred eleven".