667000331 has 2 divisors, whose sum is σ = 667000332. Its totient is φ = 667000330.

The previous prime is 667000273. The next prime is 667000337. The reversal of 667000331 is 133000766.

667000331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 667000331 - 2⁶ = 667000267 is a prime.

It is a super-2 number, since 2×667000331² = 889778883108219122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 667000331.

It is not a weakly prime, because it can be changed into another prime (667000337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333500165 + 333500166.

It is an arithmetic number, because the mean of its divisors is an integer number (333500166).

Almost surely, 2^667000331 is an apocalyptic number.

667000331 is a deficient number, since it is larger than the sum of its proper divisors (1).

667000331 is an equidigital number, since it uses as much as digits as its factorization.

667000331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 26.

The square root of 667000331 is about 25826.3495484747. The cubic root of 667000331 is about 873.7261817504.

The spelling of 667000331 in words is "six hundred sixty-seven million, three hundred thirty-one", and thus it is an aban number.