231310032 has 80 divisors (see below), whose sum is σ = 624335040. Its totient is φ = 73701376.

The previous prime is 231310019. The next prime is 231310091. The reversal of 231310032 is 230013132.

It is a junction number, because it is equal to n+sod(n) for n = 231309993 and 231310020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148168 + ... + 149720.

It is an arithmetic number, because the mean of its divisors is an integer number (7804188).

Almost surely, 2^231310032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231310032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (312167520).

231310032 is an abundant number, since it is smaller than the sum of its proper divisors (393025008).

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

231310032 is a wasteful number, since it uses less digits than its factorization.

231310032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1700 (or 1694 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 231310032 is about 15208.8800376622. The cubic root of 231310032 is about 613.8536222627.

Adding to 231310032 its reverse (230013132), we get a palindrome (461323164).

It can be divided in two parts, 2313100 and 32, that added together give a palindrome (2313132).

The spelling of 231310032 in words is "two hundred thirty-one million, three hundred ten thousand, thirty-two".