12667331 has 2 divisors, whose sum is σ = 12667332. Its totient is φ = 12667330.

The previous prime is 12667301. The next prime is 12667337. The reversal of 12667331 is 13376621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12667331 - 2⁶ = 12667267 is a prime.

It is a super-2 number, since 2×12667331² = 320922549327122, which contains 22 as substring.

It is a Sophie Germain prime.

It is equal to p₈₂₈₉₁₁ and since 12667331 and 828911 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 = 12667294 and 12667303.

It is not a weakly prime, because it can be changed into another prime (12667337) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6333665 + 6333666.

It is an arithmetic number, because the mean of its divisors is an integer number (6333666).

Almost surely, 2^12667331 is an apocalyptic number.

12667331 is a deficient number, since it is larger than the sum of its proper divisors (1).

12667331 is an equidigital number, since it uses as much as digits as its factorization.

12667331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 29.

The square root of 12667331 is about 3559.1194135629. The cubic root of 12667331 is about 233.1104304398.

The spelling of 12667331 in words is "twelve million, six hundred sixty-seven thousand, three hundred thirty-one".