231132321030 has 96 divisors (see below), whose sum is σ = 600897857184. Its totient is φ = 56872578048.

The previous prime is 231132320989. The next prime is 231132321031. The reversal of 231132321030 is 30123231132.

It is a junction number, because it is equal to n+sod(n) for n = 231132320988 and 231132321006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231132321031) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16505992 + ... + 16519988.

It is an arithmetic number, because the mean of its divisors is an integer number (6259352679).

Almost surely, 2^231132321030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231132321030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (300448928592).

231132321030 is an abundant number, since it is smaller than the sum of its proper divisors (369765536154).

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

231132321030 is a wasteful number, since it uses less digits than its factorization.

231132321030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17290 (or 17277 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 231132321030 its reverse (30123231132), we get a palindrome (261255552162).

The spelling of 231132321030 in words is "two hundred thirty-one billion, one hundred thirty-two million, three hundred twenty-one thousand, thirty".