231310020210 has 128 divisors (see below), whose sum is σ = 600840253440. Its totient is φ = 56799014400.

The previous prime is 231310020157. The next prime is 231310020211. The reversal of 231310020210 is 12020013132.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 231310020210.

It is not an unprimeable number, because it can be changed into a prime (231310020211) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6315009 + ... + 6351531.

It is an arithmetic number, because the mean of its divisors is an integer number (4694064480).

Almost surely, 2^231310020210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231310020210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (300420126720).

231310020210 is an abundant number, since it is smaller than the sum of its proper divisors (369530233230).

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

231310020210 is a wasteful number, since it uses less digits than its factorization.

231310020210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36864.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 231310020210 its reverse (12020013132), we get a palindrome (243330033342).

The spelling of 231310020210 in words is "two hundred thirty-one billion, three hundred ten million, twenty thousand, two hundred ten".