231059928 has 64 divisors (see below), whose sum is σ = 645563520. Its totient is φ = 68307200.

The previous prime is 231059923. The next prime is 231059947. The reversal of 231059928 is 829950132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231059923) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 151 + ... + 21497.

It is an arithmetic number, because the mean of its divisors is an integer number (10086930).

Almost surely, 2^231059928 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 231059928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (322781760).

231059928 is an abundant number, since it is smaller than the sum of its proper divisors (414503592).

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

231059928 is a wasteful number, since it uses less digits than its factorization.

231059928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21408 (or 21404 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 231059928 is about 15200.6555121810. The cubic root of 231059928 is about 613.6322993740.

It can be divided in two parts, 23105 and 9928, that added together give a palindrome (33033).

The spelling of 231059928 in words is "two hundred thirty-one million, fifty-nine thousand, nine hundred twenty-eight".