231310020102 has 64 divisors (see below), whose sum is σ = 537092536320. Its totient is φ = 65045874816.

The previous prime is 231310020101. The next prime is 231310020121. The reversal of 231310020102 is 201020013132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231310020101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 941848 + ... + 1161764.

It is an arithmetic number, because the mean of its divisors is an integer number (8392070880).

Almost surely, 2^231310020102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231310020102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (268546268160).

231310020102 is an abundant number, since it is smaller than the sum of its proper divisors (305782516218).

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

231310020102 is a wasteful number, since it uses less digits than its factorization.

231310020102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220325.

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

Adding to 231310020102 its reverse (201020013132), we get a palindrome (432330033234).

The spelling of 231310020102 in words is "two hundred thirty-one billion, three hundred ten million, twenty thousand, one hundred two".