11331765 has 16 divisors (see below), whose sum is σ = 20145600. Its totient is φ = 6043536.

The previous prime is 11331763. The next prime is 11331769. The reversal of 11331765 is 56713311.

It is not a de Polignac number, because 11331765 - 2¹ = 11331763 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11331763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41835 + ... + 42104.

It is an arithmetic number, because the mean of its divisors is an integer number (1259100).

Almost surely, 2^11331765 is an apocalyptic number.

11331765 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11331765 is a deficient number, since it is larger than the sum of its proper divisors (8813835).

11331765 is an equidigital number, since it uses as much as digits as its factorization.

11331765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83953 (or 83947 counting only the distinct ones).

The product of its digits is 1890, while the sum is 27.

The square root of 11331765 is about 3366.2687058522. The cubic root of 11331765 is about 224.6117749689.

It can be divided in two parts, 113 and 31765, that added together give a triangular number (31878 = T₂₅₂).

The spelling of 11331765 in words is "eleven million, three hundred thirty-one thousand, seven hundred sixty-five".