231534236 has 12 divisors (see below), whose sum is σ = 405312600. Its totient is φ = 115730640.

The previous prime is 231534217. The next prime is 231534239. The reversal of 231534236 is 632435132.

It is a super-3 number, since 3×231534236³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231534199 and 231534208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231534239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9290 + ... + 23438.

It is an arithmetic number, because the mean of its divisors is an integer number (33776050).

Almost surely, 2^231534236 is an apocalyptic number.

It is an amenable number.

231534236 is a deficient number, since it is larger than the sum of its proper divisors (173778364).

231534236 is a wasteful number, since it uses less digits than its factorization.

231534236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18244 (or 18242 counting only the distinct ones).

The product of its digits is 12960, while the sum is 29.

The square root of 231534236 is about 15216.2490778772. The cubic root of 231534236 is about 614.0518900644.

Adding to 231534236 its reverse (632435132), we get a palindrome (863969368).

The spelling of 231534236 in words is "two hundred thirty-one million, five hundred thirty-four thousand, two hundred thirty-six".