1131142218 has 32 divisors (see below), whose sum is σ = 2344075200. Its totient is φ = 363657216.

The previous prime is 1131142211. The next prime is 1131142237. The reversal of 1131142218 is 8122411311.

1131142218 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (1131142211) 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, 11383 + ... + 48906.

It is an arithmetic number, because the mean of its divisors is an integer number (73252350).

Almost surely, 2^1131142218 is an apocalyptic number.

1131142218 is an abundant number, since it is smaller than the sum of its proper divisors (1212932982).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1131142218 is a wasteful number, since it uses less digits than its factorization.

1131142218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60406.

The product of its digits is 384, while the sum is 24.

The square root of 1131142218 is about 33632.4578049241. The cubic root of 1131142218 is about 1041.9312665958.

Adding to 1131142218 its reverse (8122411311), we get a palindrome (9253553529).

The spelling of 1131142218 in words is "one billion, one hundred thirty-one million, one hundred forty-two thousand, two hundred eighteen".