1131355 has 8 divisors (see below), whose sum is σ = 1429200. Its totient is φ = 857376.

The previous prime is 1131353. The next prime is 1131379. The reversal of 1131355 is 5531311.

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 1131355 - 2¹ = 1131353 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is not an unprimeable number, because it can be changed into a prime (1131353) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5860 + ... + 6049.

It is an arithmetic number, because the mean of its divisors is an integer number (178650).

2^1131355 is an apocalyptic number.

1131355 is a deficient number, since it is larger than the sum of its proper divisors (297845).

1131355 is a wasteful number, since it uses less digits than its factorization.

1131355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11933.

The product of its digits is 225, while the sum is 19.

The square root of 1131355 is about 1063.6517287157. The cubic root of 1131355 is about 104.1996595934.

Adding to 1131355 its reverse (5531311), we get a palindrome (6662666).

The spelling of 1131355 in words is "one million, one hundred thirty-one thousand, three hundred fifty-five".