1131318 has 12 divisors (see below), whose sum is σ = 2451228. Its totient is φ = 377100.

The previous prime is 1131307. The next prime is 1131323. The reversal of 1131318 is 8131311.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 62851 = 1131318 / (1 + 1 + 3 + 1 + 3 + 1 + 8).

It is a self number, because there is not a number n which added to its sum of digits gives 1131318.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 31408 + ... + 31443.

It is an arithmetic number, because the mean of its divisors is an integer number (204269).

2^1131318 is an apocalyptic number.

1131318 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1131318 is an abundant number, since it is smaller than the sum of its proper divisors (1319910).

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

1131318 is a wasteful number, since it uses less digits than its factorization.

1131318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62859 (or 62856 counting only the distinct ones).

The product of its digits is 72, while the sum is 18.

The square root of 1131318 is about 1063.6343356624. The cubic root of 1131318 is about 104.1985236607.

Adding to 1131318 its reverse (8131311), we get a palindrome (9262629).

It can be divided in two parts, 113 and 1318, that added together give a triangular number (1431 = T₅₃).

The spelling of 1131318 in words is "one million, one hundred thirty-one thousand, three hundred eighteen".