12277231 has 4 divisors (see below), whose sum is σ = 12562792. Its totient is φ = 11991672.

The previous prime is 12277219. The next prime is 12277241. The reversal of 12277231 is 13277221.

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 12277231 - 2¹¹ = 12275183 is a prime.

It is a super-2 number, since 2×12277231² = 301460802054722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12277196 and 12277205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12277241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142716 + ... + 142801.

It is an arithmetic number, because the mean of its divisors is an integer number (3140698).

Almost surely, 2^12277231 is an apocalyptic number.

12277231 is a deficient number, since it is larger than the sum of its proper divisors (285561).

12277231 is an equidigital number, since it uses as much as digits as its factorization.

12277231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285560.

The product of its digits is 1176, while the sum is 25.

The square root of 12277231 is about 3503.8879833693. The cubic root of 12277231 is about 230.6925001509.

The spelling of 12277231 in words is "twelve million, two hundred seventy-seven thousand, two hundred thirty-one".