231102212320 has 144 divisors (see below), whose sum is σ = 641056414320. Its totient is φ = 78494244864.

The previous prime is 231102212303. The next prime is 231102212351. The reversal of 231102212320 is 23212201132.

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, 701136 + ... + 976624.

It is an arithmetic number, because the mean of its divisors is an integer number (4451780655).

Almost surely, 2^231102212320 is an apocalyptic number.

231102212320 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 231102212320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (320528207160).

231102212320 is an abundant number, since it is smaller than the sum of its proper divisors (409954202000).

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

231102212320 is a wasteful number, since it uses less digits than its factorization.

231102212320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275625 (or 275610 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 231102212320 its reverse (23212201132), we get a palindrome (254314413452).

The spelling of 231102212320 in words is "two hundred thirty-one billion, one hundred two million, two hundred twelve thousand, three hundred twenty".