231466643 has 2 divisors, whose sum is σ = 231466644. Its totient is φ = 231466642.

The previous prime is 231466633. The next prime is 231466667. The reversal of 231466643 is 346664132.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231466643 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (231466633) 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, 115733321 + 115733322.

It is an arithmetic number, because the mean of its divisors is an integer number (115733322).

Almost surely, 2^231466643 is an apocalyptic number.

231466643 is a deficient number, since it is larger than the sum of its proper divisors (1).

231466643 is an equidigital number, since it uses as much as digits as its factorization.

231466643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 35.

The square root of 231466643 is about 15214.0278361780. The cubic root of 231466643 is about 613.9921297891.

The spelling of 231466643 in words is "two hundred thirty-one million, four hundred sixty-six thousand, six hundred forty-three".