1131111140 has 24 divisors (see below), whose sum is σ = 2378527872. Its totient is φ = 451836000.

The previous prime is 1131111139. The next prime is 1131111151. The reversal of 1131111140 is 411111311.

It is a happy number.

It is a super-2 number, since 2×1131111140² = 2558824822064199200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22634 + ... + 52673.

It is an arithmetic number, because the mean of its divisors is an integer number (99105328).

Almost surely, 2^1131111140 is an apocalyptic number.

1131111140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1131111140 is an abundant number, since it is smaller than the sum of its proper divisors (1247416732).

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

1131111140 is a wasteful number, since it uses less digits than its factorization.

1131111140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76067 (or 76065 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 14.

The square root of 1131111140 is about 33631.9957778304. The cubic root of 1131111140 is about 1041.9217241952.

Adding to 1131111140 its reverse (411111311), we get a palindrome (1542222451).

The spelling of 1131111140 in words is "one billion, one hundred thirty-one million, one hundred eleven thousand, one hundred forty".