1131441140 has 12 divisors (see below), whose sum is σ = 2376026436. Its totient is φ = 452576448.

The previous prime is 1131441133. The next prime is 1131441163. The reversal of 1131441140 is 411441311.

It can be written as a sum of positive squares in 2 ways, for example, as 818646544 + 312794596 = 28612^2 + 17686^2 .

It is a super-4 number, since 4×1131441140⁴ (a number of 37 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 56572057 = 1131441140 / (1 + 1 + 3 + 1 + 4 + 4 + 1 + 1 + 4 + 0).

It is a congruent number.

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, 28286009 + ... + 28286048.

It is an arithmetic number, because the mean of its divisors is an integer number (198002203).

Almost surely, 2^1131441140 is an apocalyptic number.

1131441140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1131441140 is an abundant number, since it is smaller than the sum of its proper divisors (1244585296).

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

1131441140 is a wasteful number, since it uses less digits than its factorization.

1131441140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56572066 (or 56572064 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 1131441140 is about 33636.9014625307. The cubic root of 1131441140 is about 1042.0230407162.

Adding to 1131441140 its reverse (411441311), we get a palindrome (1542882451).

The spelling of 1131441140 in words is "one billion, one hundred thirty-one million, four hundred forty-one thousand, one hundred forty".