231021231102 has 48 divisors (see below), whose sum is σ = 501527793312. Its totient is φ = 76856186880.

The previous prime is 231021231079. The next prime is 231021231113. The reversal of 231021231102 is 201132120132.

231021231102 is a `hidden beast` number, since 2 + 310 + 21 + 231 + 102 = 666.

231021231102 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21672558 + ... + 21683214.

It is an arithmetic number, because the mean of its divisors is an integer number (10448495694).

Almost surely, 2^231021231102 is an apocalyptic number.

231021231102 is an abundant number, since it is smaller than the sum of its proper divisors (270506562210).

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

231021231102 is a wasteful number, since it uses less digits than its factorization.

231021231102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12913 (or 12910 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 231021231102 its reverse (201132120132), we get a palindrome (432153351234).

The spelling of 231021231102 in words is "two hundred thirty-one billion, twenty-one million, two hundred thirty-one thousand, one hundred two".