12056311 has 4 divisors (see below), whose sum is σ = 12101400. Its totient is φ = 12011224.

The previous prime is 12056287. The next prime is 12056321. The reversal of 12056311 is 11365021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11365021 = 19 ⋅598159.

It is a cyclic number.

It is not a de Polignac number, because 12056311 - 2¹⁷ = 11925239 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 (12056321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22141 + ... + 22678.

It is an arithmetic number, because the mean of its divisors is an integer number (3025350).

Almost surely, 2^12056311 is an apocalyptic number.

12056311 is a deficient number, since it is larger than the sum of its proper divisors (45089).

12056311 is an equidigital number, since it uses as much as digits as its factorization.

12056311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45088.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 12056311 is about 3472.2198951103. The cubic root of 12056311 is about 229.3004009427.

The spelling of 12056311 in words is "twelve million, fifty-six thousand, three hundred eleven".