231860947 has 2 divisors, whose sum is σ = 231860948. Its totient is φ = 231860946.

The previous prime is 231860929. The next prime is 231860969. The reversal of 231860947 is 749068132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231860947 - 2¹¹ = 231858899 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (231860927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115930473 + 115930474.

It is an arithmetic number, because the mean of its divisors is an integer number (115930474).

Almost surely, 2^231860947 is an apocalyptic number.

231860947 is a deficient number, since it is larger than the sum of its proper divisors (1).

231860947 is an equidigital number, since it uses as much as digits as its factorization.

231860947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 231860947 is about 15226.9808891980. The cubic root of 231860947 is about 614.3405777082.

The spelling of 231860947 in words is "two hundred thirty-one million, eight hundred sixty thousand, nine hundred forty-seven".