231303210220 has 12 divisors (see below), whose sum is σ = 485736741504. Its totient is φ = 92521284080.

The previous prime is 231303210217. The next prime is 231303210227. The reversal of 231303210220 is 22012303132.

It is not an unprimeable number, because it can be changed into a prime (231303210227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5782580236 + ... + 5782580275.

It is an arithmetic number, because the mean of its divisors is an integer number (40478061792).

Almost surely, 2^231303210220 is an apocalyptic number.

231303210220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231303210220 is an abundant number, since it is smaller than the sum of its proper divisors (254433531284).

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

231303210220 is a wasteful number, since it uses less digits than its factorization.

231303210220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11565160520 (or 11565160518 counting only the distinct ones).

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

Adding to 231303210220 its reverse (22012303132), we get a palindrome (253315513352).

The spelling of 231303210220 in words is "two hundred thirty-one billion, three hundred three million, two hundred ten thousand, two hundred twenty".