231421040843 has 2 divisors, whose sum is σ = 231421040844. Its totient is φ = 231421040842.

The previous prime is 231421040833. The next prime is 231421040867. The reversal of 231421040843 is 348040124132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231421040843 - 2⁴ = 231421040827 is a prime.

It is not a weakly prime, because it can be changed into another prime (231421040803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115710520421 + 115710520422.

It is an arithmetic number, because the mean of its divisors is an integer number (115710520422).

Almost surely, 2^231421040843 is an apocalyptic number.

231421040843 is a deficient number, since it is larger than the sum of its proper divisors (1).

231421040843 is an equidigital number, since it uses as much as digits as its factorization.

231421040843 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 32.

Adding to 231421040843 its reverse (348040124132), we get a palindrome (579461164975).

The spelling of 231421040843 in words is "two hundred thirty-one billion, four hundred twenty-one million, forty thousand, eight hundred forty-three".