1131485 has 8 divisors (see below), whose sum is σ = 1416960. Its totient is φ = 865744.

The previous prime is 1131479. The next prime is 1131491. The reversal of 1131485 is 5841311.

It is an interprime number because it is at equal distance from previous prime (1131479) and next prime (1131491).

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 1131485 - 2⁶ = 1131421 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1131485.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4805 + ... + 5034.

It is an arithmetic number, because the mean of its divisors is an integer number (177120).

2^1131485 is an apocalyptic number.

It is an amenable number.

1131485 is a deficient number, since it is larger than the sum of its proper divisors (285475).

1131485 is an equidigital number, since it uses as much as digits as its factorization.

1131485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9867.

The product of its digits is 480, while the sum is 23.

The square root of 1131485 is about 1063.7128371887. The cubic root of 1131485 is about 104.2036505120.

Adding to 1131485 its reverse (5841311), we get a palindrome (6972796).

The spelling of 1131485 in words is "one million, one hundred thirty-one thousand, four hundred eighty-five".