1131142211 has 2 divisors, whose sum is σ = 1131142212. Its totient is φ = 1131142210.

The previous prime is 1131142193. The next prime is 1131142237. The reversal of 1131142211 is 1122411311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1131142211 - 2⁶ = 1131142147 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1131142211.

It is not a weakly prime, because it can be changed into another prime (1131442211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565571105 + 565571106.

It is an arithmetic number, because the mean of its divisors is an integer number (565571106).

Almost surely, 2^1131142211 is an apocalyptic number.

1131142211 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131142211 is an equidigital number, since it uses as much as digits as its factorization.

1131142211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48, while the sum is 17.

The square root of 1131142211 is about 33632.4577008580. The cubic root of 1131142211 is about 1041.9312644464.

Adding to 1131142211 its reverse (1122411311), we get a palindrome (2253553522).

The spelling of 1131142211 in words is "one billion, one hundred thirty-one million, one hundred forty-two thousand, two hundred eleven".