231230230021 has 16 divisors (see below), whose sum is σ = 268241186304. Its totient is φ = 195214537584.

The previous prime is 231230230001. The next prime is 231230230027. The reversal of 231230230021 is 120032032132.

231230230021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 231230230021 - 2¹³ = 231230221829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231230230027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4346046 + ... + 4398928.

It is an arithmetic number, because the mean of its divisors is an integer number (16765074144).

Almost surely, 2^231230230021 is an apocalyptic number.

It is an amenable number.

231230230021 is a deficient number, since it is larger than the sum of its proper divisors (37010956283).

231230230021 is an equidigital number, since it uses as much as digits as its factorization.

231230230021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62280.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 231230230021 its reverse (120032032132), we get a palindrome (351262262153).

The spelling of 231230230021 in words is "two hundred thirty-one billion, two hundred thirty million, two hundred thirty thousand, twenty-one".