231868205047 has 2 divisors, whose sum is σ = 231868205048. Its totient is φ = 231868205046.

The previous prime is 231868205021. The next prime is 231868205069. The reversal of 231868205047 is 740502868132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231868205047 - 2¹¹ = 231868202999 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231868204988 and 231868205006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231868205017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115934102523 + 115934102524.

It is an arithmetic number, because the mean of its divisors is an integer number (115934102524).

Almost surely, 2^231868205047 is an apocalyptic number.

231868205047 is a deficient number, since it is larger than the sum of its proper divisors (1).

231868205047 is an equidigital number, since it uses as much as digits as its factorization.

231868205047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 645120, while the sum is 46.

The spelling of 231868205047 in words is "two hundred thirty-one billion, eight hundred sixty-eight million, two hundred five thousand, forty-seven".