11131365 has 16 divisors (see below), whose sum is σ = 20354688. Its totient is φ = 5088576.

The previous prime is 11131361. The next prime is 11131369. The reversal of 11131365 is 56313111.

It is an interprime number because it is at equal distance from previous prime (11131361) and next prime (11131369).

It is not a de Polignac number, because 11131365 - 2² = 11131361 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11131361) 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, 52902 + ... + 53111.

It is an arithmetic number, because the mean of its divisors is an integer number (1272168).

Almost surely, 2^11131365 is an apocalyptic number.

11131365 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11131365 is a deficient number, since it is larger than the sum of its proper divisors (9223323).

11131365 is a wasteful number, since it uses less digits than its factorization.

11131365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106028.

The product of its digits is 270, while the sum is 21.

The square root of 11131365 is about 3336.3700334345. The cubic root of 11131365 is about 223.2798205988.

Adding to 11131365 its reverse (56313111), we get a palindrome (67444476).

The spelling of 11131365 in words is "eleven million, one hundred thirty-one thousand, three hundred sixty-five".