1131400541 has 8 divisors (see below), whose sum is σ = 1230331320. Its totient is φ = 1036067328.

The previous prime is 1131400537. The next prime is 1131400553. The reversal of 1131400541 is 1450041311.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 796876441 + 334524100 = 28229^2 + 18290^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1131400541 - 2² = 1131400537 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131400511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 898736 + ... + 899993.

It is an arithmetic number, because the mean of its divisors is an integer number (153791415).

Almost surely, 2^1131400541 is an apocalyptic number.

It is an amenable number.

1131400541 is a deficient number, since it is larger than the sum of its proper divisors (98930779).

1131400541 is a wasteful number, since it uses less digits than its factorization.

1131400541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1798783.

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

The square root of 1131400541 is about 33636.2979681177. The cubic root of 1131400541 is about 1042.0105770837.

Adding to 1131400541 its reverse (1450041311), we get a palindrome (2581441852).

The spelling of 1131400541 in words is "one billion, one hundred thirty-one million, four hundred thousand, five hundred forty-one".