1131087211 has 2 divisors, whose sum is σ = 1131087212. Its totient is φ = 1131087210.

The previous prime is 1131087149. The next prime is 1131087227. The reversal of 1131087211 is 1127801311.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1131087211 is a prime.

It is not a weakly prime, because it can be changed into another prime (1131087311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565543605 + 565543606.

It is an arithmetic number, because the mean of its divisors is an integer number (565543606).

Almost surely, 2^1131087211 is an apocalyptic number.

1131087211 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131087211 is an equidigital number, since it uses as much as digits as its factorization.

1131087211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 25.

The square root of 1131087211 is about 33631.6400284018. The cubic root of 1131087211 is about 1041.9143767531.

Adding to 1131087211 its reverse (1127801311), we get a palindrome (2258888522).

The spelling of 1131087211 in words is "one billion, one hundred thirty-one million, eighty-seven thousand, two hundred eleven".