12056331 has 16 divisors (see below), whose sum is σ = 18595584. Its totient is φ = 6805344.

The previous prime is 12056327. The next prime is 12056333. The reversal of 12056331 is 13365021.

It is not a de Polignac number, because 12056331 - 2² = 12056327 is a prime.

It is a super-2 number, since 2×12056331² = 290710234363122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 12056298 and 12056307.

It is not an unprimeable number, because it can be changed into a prime (12056333) 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, 1716 + ... + 5201.

It is an arithmetic number, because the mean of its divisors is an integer number (1162224).

Almost surely, 2^12056331 is an apocalyptic number.

12056331 is a deficient number, since it is larger than the sum of its proper divisors (6539253).

12056331 is an equidigital number, since it uses as much as digits as its factorization.

12056331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7010.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 12056331 is about 3472.2227751111. Note that the first 3 decimals coincide. The cubic root of 12056331 is about 229.3005277368.

The spelling of 12056331 in words is "twelve million, fifty-six thousand, three hundred thirty-one".