231301222002 has 80 divisors (see below), whose sum is σ = 535304216832. Its totient is φ = 74571567840.

The previous prime is 231301221967. The next prime is 231301222021. The reversal of 231301222002 is 200222103132.

231301222002 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 9695613 + ... + 9719439.

Almost surely, 2^231301222002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231301222002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (267652108416).

231301222002 is an abundant number, since it is smaller than the sum of its proper divisors (304002994830).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231301222002 is a wasteful number, since it uses less digits than its factorization.

231301222002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25805 (or 25796 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 231301222002 its reverse (200222103132), we get a palindrome (431523325134).

The spelling of 231301222002 in words is "two hundred thirty-one billion, three hundred one million, two hundred twenty-two thousand, two".