231506534 has 16 divisors (see below), whose sum is σ = 398151936. Its totient is φ = 98896200.

The previous prime is 231506441. The next prime is 231506563. The reversal of 231506534 is 435605132.

231506534 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 231506497 and 231506506.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22232 + ... + 30939.

It is an arithmetic number, because the mean of its divisors is an integer number (24884496).

Almost surely, 2^231506534 is an apocalyptic number.

231506534 is a deficient number, since it is larger than the sum of its proper divisors (166645402).

231506534 is a wasteful number, since it uses less digits than its factorization.

231506534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53491.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 231506534 is about 15215.3387737507. The cubic root of 231506534 is about 614.0273995985.

The spelling of 231506534 in words is "two hundred thirty-one million, five hundred six thousand, five hundred thirty-four".