12226831 has 2 divisors, whose sum is σ = 12226832. Its totient is φ = 12226830.

The previous prime is 12226829. The next prime is 12226849. The reversal of 12226831 is 13862221.

12226831 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12226831 - 2¹ = 12226829 is a prime.

It is a super-2 number, since 2×12226831² = 298990792605122, which contains 22 as substring.

Together with 12226829, it forms a pair of twin primes.

It is equal to p₈₀₁₉₄₃ and since 12226831 and 801943 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 12226796 and 12226805.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12226811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6113415 + 6113416.

It is an arithmetic number, because the mean of its divisors is an integer number (6113416).

Almost surely, 2^12226831 is an apocalyptic number.

12226831 is the 2212-nd centered pentagonal number.

12226831 is a deficient number, since it is larger than the sum of its proper divisors (1).

12226831 is an equidigital number, since it uses as much as digits as its factorization.

12226831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 25.

The square root of 12226831 is about 3496.6885763533. The cubic root of 12226831 is about 230.3763906392.

The spelling of 12226831 in words is "twelve million, two hundred twenty-six thousand, eight hundred thirty-one".