12023311 has 4 divisors (see below), whose sum is σ = 12115224. Its totient is φ = 11931400.

The previous prime is 12023309. The next prime is 12023317. The reversal of 12023311 is 11332021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12023311 - 2¹ = 12023309 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12023291 and 12023300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12023317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45760 + ... + 46021.

It is an arithmetic number, because the mean of its divisors is an integer number (3028806).

Almost surely, 2^12023311 is an apocalyptic number.

12023311 is a deficient number, since it is larger than the sum of its proper divisors (91913).

12023311 is an equidigital number, since it uses as much as digits as its factorization.

12023311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91912.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 12023311 is about 3467.4646357245. The cubic root of 12023311 is about 229.0909994741.

Adding to 12023311 its reverse (11332021), we get a palindrome (23355332).

The spelling of 12023311 in words is "twelve million, twenty-three thousand, three hundred eleven".