11231765 has 16 divisors (see below), whose sum is σ = 14017536. Its totient is φ = 8630400.

The previous prime is 11231761. The next prime is 11231767. The reversal of 11231765 is 56713211.

11231765 = 93² + 94² + ... + 325².

It is not a de Polignac number, because 11231765 - 2² = 11231761 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11231761) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 35960 + ... + 36270.

It is an arithmetic number, because the mean of its divisors is an integer number (876096).

Almost surely, 2^11231765 is an apocalyptic number.

It is an amenable number.

11231765 is a deficient number, since it is larger than the sum of its proper divisors (2785771).

11231765 is a wasteful number, since it uses less digits than its factorization.

11231765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580.

The product of its digits is 1260, while the sum is 26.

The square root of 11231765 is about 3351.3825505305. The cubic root of 11231765 is about 223.9491075390.

Adding to 11231765 its reverse (56713211), we get a palindrome (67944976).

The spelling of 11231765 in words is "eleven million, two hundred thirty-one thousand, seven hundred sixty-five".