1131162205 has 16 divisors (see below), whose sum is σ = 1372552704. Its totient is φ = 894862080.

The previous prime is 1131162181. The next prime is 1131162209. The reversal of 1131162205 is 5022611311.

It is a happy number.

It is not a de Polignac number, because 1131162205 - 2⁷ = 1131162077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131162209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 273100 + ... + 277210.

It is an arithmetic number, because the mean of its divisors is an integer number (85784544).

Almost surely, 2^1131162205 is an apocalyptic number.

It is an amenable number.

1131162205 is a deficient number, since it is larger than the sum of its proper divisors (241390499).

1131162205 is a wasteful number, since it uses less digits than its factorization.

1131162205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4716.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 1131162205 is about 33632.7549421691. The cubic root of 1131162205 is about 1041.9374034479.

Adding to 1131162205 its reverse (5022611311), we get a palindrome (6153773516).

The spelling of 1131162205 in words is "one billion, one hundred thirty-one million, one hundred sixty-two thousand, two hundred five".