12776231 has 12 divisors (see below), whose sum is σ = 14651712. Its totient is φ = 11097216.

The previous prime is 12776213. The next prime is 12776243. The reversal of 12776231 is 13267721.

It is not a de Polignac number, because 12776231 - 2⁶ = 12776167 is a prime.

It is a super-2 number, since 2×12776231² = 326464157130722, 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 = 12776194 and 12776203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12776251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 650 + ... + 5096.

It is an arithmetic number, because the mean of its divisors is an integer number (1220976).

Almost surely, 2^12776231 is an apocalyptic number.

12776231 is a deficient number, since it is larger than the sum of its proper divisors (1875481).

12776231 is a wasteful number, since it uses less digits than its factorization.

12776231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4490 (or 4477 counting only the distinct ones).

The product of its digits is 3528, while the sum is 29.

The square root of 12776231 is about 3574.3854017159. The cubic root of 12776231 is about 233.7765356360.

The spelling of 12776231 in words is "twelve million, seven hundred seventy-six thousand, two hundred thirty-one".