1131504140 has 48 divisors (see below), whose sum is σ = 2589820128. Its totient is φ = 412744704.

The previous prime is 1131504133. The next prime is 1131504151. The reversal of 1131504140 is 414051311.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4637 + ... + 47796.

It is an arithmetic number, because the mean of its divisors is an integer number (53954586).

Almost surely, 2^1131504140 is an apocalyptic number.

1131504140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1131504140 is an abundant number, since it is smaller than the sum of its proper divisors (1458315988).

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

1131504140 is a wasteful number, since it uses less digits than its factorization.

1131504140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52538 (or 52536 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 1131504140 is about 33637.8379210079. The cubic root of 1131504140 is about 1042.0423807215.

Adding to 1131504140 its reverse (414051311), we get a palindrome (1545555451).

The spelling of 1131504140 in words is "one billion, one hundred thirty-one million, five hundred four thousand, one hundred forty".