231330100218 has 128 divisors (see below), whose sum is σ = 567394523136. Its totient is φ = 61373030400.

The previous prime is 231330100217. The next prime is 231330100231. The reversal of 231330100218 is 812001033132.

It is not an unprimeable number, because it can be changed into a prime (231330100217) 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 63 ways as a sum of consecutive naturals, for example, 22919353 + ... + 22929443.

It is an arithmetic number, because the mean of its divisors is an integer number (4432769712).

Almost surely, 2^231330100218 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231330100218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (283697261568).

231330100218 is an abundant number, since it is smaller than the sum of its proper divisors (336064422918).

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

231330100218 is a wasteful number, since it uses less digits than its factorization.

231330100218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10548.

The product of its (nonzero) digits is 864, while the sum is 24.

The spelling of 231330100218 in words is "two hundred thirty-one billion, three hundred thirty million, one hundred thousand, two hundred eighteen".