1311135 has 16 divisors (see below), whose sum is σ = 2397696. Its totient is φ = 599328.

The previous prime is 1311131. The next prime is 1311143. The reversal of 1311135 is 5311131.

It is not a de Polignac number, because 1311135 - 2² = 1311131 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a nude number because it is divisible by every one of its digits.

1311135 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6139 + ... + 6348.

It is an arithmetic number, because the mean of its divisors is an integer number (149856).

2^1311135 is an apocalyptic number.

1311135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1311135 is a deficient number, since it is larger than the sum of its proper divisors (1086561).

1311135 is a wasteful number, since it uses less digits than its factorization.

1311135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12502.

The product of its digits is 45, while the sum is 15.

The square root of 1311135 is about 1145.0480339270. The cubic root of 1311135 is about 109.4500094990.

Adding to 1311135 its reverse (5311131), we get a palindrome (6622266).

The spelling of 1311135 in words is "one million, three hundred eleven thousand, one hundred thirty-five".