1131142312 has 16 divisors (see below), whose sum is σ = 2121255360. Its totient is φ = 565474224.

The previous prime is 1131142297. The next prime is 1131142339. The reversal of 1131142312 is 2132411311.

It is a self number, because there is not a number n which added to its sum of digits gives 1131142312.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71073 + ... + 85519.

It is an arithmetic number, because the mean of its divisors is an integer number (132578460).

Almost surely, 2^1131142312 is an apocalyptic number.

It is an amenable number.

1131142312 is a deficient number, since it is larger than the sum of its proper divisors (990113048).

1131142312 is a wasteful number, since it uses less digits than its factorization.

1131142312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24240 (or 24236 counting only the distinct ones).

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

The square root of 1131142312 is about 33632.4592023836. The cubic root of 1131142312 is about 1041.9312954579.

Adding to 1131142312 its reverse (2132411311), we get a palindrome (3263553623).

The spelling of 1131142312 in words is "one billion, one hundred thirty-one million, one hundred forty-two thousand, three hundred twelve".