231706667 has 2 divisors, whose sum is σ = 231706668. Its totient is φ = 231706666.

The previous prime is 231706639. The next prime is 231706687. The reversal of 231706667 is 766607132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231706667 - 2⁸ = 231706411 is a 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 231706667.

It is not a weakly prime, because it can be changed into another prime (231706627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115853333 + 115853334.

It is an arithmetic number, because the mean of its divisors is an integer number (115853334).

Almost surely, 2^231706667 is an apocalyptic number.

231706667 is a deficient number, since it is larger than the sum of its proper divisors (1).

231706667 is an equidigital number, since it uses as much as digits as its factorization.

231706667 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504, while the sum is 38.

The square root of 231706667 is about 15221.9140386484. The cubic root of 231706667 is about 614.2042869765.

The spelling of 231706667 in words is "two hundred thirty-one million, seven hundred six thousand, six hundred sixty-seven".