231221140330300 has 216 divisors, whose sum is σ = 523637815034880. Its totient is φ = 88595932588800.

The previous prime is 231221140330289. The next prime is 231221140330309. The reversal of 231221140330300 is 3033041122132.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231221140330309) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2054165421 + ... + 2054277979.

It is an arithmetic number, because the mean of its divisors is an integer number (2424249143680).

Almost surely, 2^{231221140330300} is an apocalyptic number.

231221140330300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231221140330300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261818907517440).

231221140330300 is an abundant number, since it is smaller than the sum of its proper divisors (292416674704580).

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

231221140330300 is a wasteful number, since it uses less digits than its factorization.

231221140330300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112853 (or 112793 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 231221140330300 its reverse (3033041122132), we get a palindrome (234254181452432).

The spelling of 231221140330300 in words is "two hundred thirty-one trillion, two hundred twenty-one billion, one hundred forty million, three hundred thirty thousand, three hundred".