1131240112 has 20 divisors (see below), whose sum is σ = 2320706376. Its totient is φ = 532348160.

The previous prime is 1131240067. The next prime is 1131240137. The reversal of 1131240112 is 2110421311.

It is a Harshad number since it is a multiple of its sum of digits (16).

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, 2079214 + ... + 2079757.

Almost surely, 2^1131240112 is an apocalyptic number.

It is an amenable number.

1131240112 is an abundant number, since it is smaller than the sum of its proper divisors (1189466264).

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

1131240112 is a wasteful number, since it uses less digits than its factorization.

1131240112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4158996 (or 4158990 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 1131240112 is about 33633.9131235127. The cubic root of 1131240112 is about 1041.9613234932.

Adding to 1131240112 its reverse (2110421311), we get a palindrome (3241661423).

The spelling of 1131240112 in words is "one billion, one hundred thirty-one million, two hundred forty thousand, one hundred twelve".