1131423211 has 2 divisors, whose sum is σ = 1131423212. Its totient is φ = 1131423210.

The previous prime is 1131423193. The next prime is 1131423221. The reversal of 1131423211 is 1123241311.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1131423211 - 2¹¹ = 1131421163 is a prime.

It is not a weakly prime, because it can be changed into another prime (1131423221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565711605 + 565711606.

It is an arithmetic number, because the mean of its divisors is an integer number (565711606).

Almost surely, 2^1131423211 is an apocalyptic number.

1131423211 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131423211 is an equidigital number, since it uses as much as digits as its factorization.

1131423211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 144, while the sum is 19.

The square root of 1131423211 is about 33636.6349535741. The cubic root of 1131423211 is about 1042.0175366650.

Adding to 1131423211 its reverse (1123241311), we get a palindrome (2254664522).

The spelling of 1131423211 in words is "one billion, one hundred thirty-one million, four hundred twenty-three thousand, two hundred eleven".