231085572 has 96 divisors (see below), whose sum is σ = 581454720. Its totient is φ = 71285760.

The previous prime is 231085571. The next prime is 231085579. The reversal of 231085572 is 275580132.

231085572 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (231085571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1686688 + ... + 1686824.

It is an arithmetic number, because the mean of its divisors is an integer number (6056820).

Almost surely, 2^231085572 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 231085572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (290727360).

231085572 is an abundant number, since it is smaller than the sum of its proper divisors (350369148).

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

231085572 is a wasteful number, since it uses less digits than its factorization.

231085572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341 (or 339 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 231085572 is about 15201.4990050324. The cubic root of 231085572 is about 613.6549996964.

It can be divided in two parts, 23108 and 5572, that added together give a triangular number (28680 = T₂₃₉).

The spelling of 231085572 in words is "two hundred thirty-one million, eighty-five thousand, five hundred seventy-two".