11231305 has 16 divisors (see below), whose sum is σ = 14357520. Its totient is φ = 8404992.

The previous prime is 11231293. The next prime is 11231317. The reversal of 11231305 is 50313211.

It is an interprime number because it is at equal distance from previous prime (11231293) and next prime (11231317).

It can be written as a sum of positive squares in 8 ways, for example, as 4528384 + 6702921 = 2128^2 + 2589^2 .

It is a cyclic number.

It is not a de Polignac number, because 11231305 - 2¹⁹ = 10707017 is a prime.

It is a super-2 number, since 2×11231305² = 252284424006050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19177 + ... + 19753.

It is an arithmetic number, because the mean of its divisors is an integer number (897345).

Almost surely, 2^11231305 is an apocalyptic number.

It is an amenable number.

11231305 is a deficient number, since it is larger than the sum of its proper divisors (3126215).

11231305 is a wasteful number, since it uses less digits than its factorization.

11231305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 11231305 is about 3351.3139214344. The cubic root of 11231305 is about 223.9460501983.

Adding to 11231305 its reverse (50313211), we get a palindrome (61544516).

The spelling of 11231305 in words is "eleven million, two hundred thirty-one thousand, three hundred five".