11231223 has 16 divisors (see below), whose sum is σ = 15924480. Its totient is φ = 7020864.

The previous prime is 11231219. The next prime is 11231243. The reversal of 11231223 is 32213211.

It is not a de Polignac number, because 11231223 - 2² = 11231219 is a prime.

It is a super-2 number, since 2×11231223² = 252280740151458, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11231243) 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, 4915 + ... + 6827.

It is an arithmetic number, because the mean of its divisors is an integer number (995280).

Almost surely, 2^11231223 is an apocalyptic number.

11231223 is a deficient number, since it is larger than the sum of its proper divisors (4693257).

11231223 is a wasteful number, since it uses less digits than its factorization.

11231223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2038.

The product of its digits is 72, while the sum is 15.

The square root of 11231223 is about 3351.3016874045. The cubic root of 11231223 is about 223.9455051853.

Adding to 11231223 its reverse (32213211), we get a palindrome (43444434).

It can be divided in two parts, 1123 and 1223, that added together give a triangular number (2346 = T₆₈).

The spelling of 11231223 in words is "eleven million, two hundred thirty-one thousand, two hundred twenty-three".