231002303221 has 16 divisors (see below), whose sum is σ = 244246147200. Its totient is φ = 217867622400.

The previous prime is 231002303143. The next prime is 231002303333. The reversal of 231002303221 is 122303200132.

It is a cyclic number.

It is not a de Polignac number, because 231002303221 - 2¹⁵ = 231002270453 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231002303921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20100645 + ... + 20112133.

It is an arithmetic number, because the mean of its divisors is an integer number (15265384200).

Almost surely, 2^231002303221 is an apocalyptic number.

It is an amenable number.

231002303221 is a deficient number, since it is larger than the sum of its proper divisors (13243843979).

231002303221 is a wasteful number, since it uses less digits than its factorization.

231002303221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16140.

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

Adding to 231002303221 its reverse (122303200132), we get a palindrome (353305503353).

The spelling of 231002303221 in words is "two hundred thirty-one billion, two million, three hundred three thousand, two hundred twenty-one".