231085533 has 8 divisors (see below), whose sum is σ = 352130368. Its totient is φ = 132048864.

The previous prime is 231085523. The next prime is 231085549. The reversal of 231085533 is 335580132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 231085533 - 2⁶ = 231085469 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 231085533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231085523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5502016 + ... + 5502057.

It is an arithmetic number, because the mean of its divisors is an integer number (44016296).

Almost surely, 2^231085533 is an apocalyptic number.

It is an amenable number.

231085533 is a deficient number, since it is larger than the sum of its proper divisors (121044835).

231085533 is a wasteful number, since it uses less digits than its factorization.

231085533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11004083.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 231085533 is about 15201.4977222641. The cubic root of 231085533 is about 613.6549651745.

The spelling of 231085533 in words is "two hundred thirty-one million, eighty-five thousand, five hundred thirty-three".