231506543 has 8 divisors (see below), whose sum is σ = 239308416. Its totient is φ = 223725600.

The previous prime is 231506441. The next prime is 231506563. The reversal of 231506543 is 345605132.

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

It is a cyclic number.

It is not a de Polignac number, because 231506543 - 2²⁴ = 214729327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231506563) 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, 19133 + ... + 28793.

It is an arithmetic number, because the mean of its divisors is an integer number (29913552).

Almost surely, 2^231506543 is an apocalyptic number.

231506543 is a deficient number, since it is larger than the sum of its proper divisors (7801873).

231506543 is an equidigital number, since it uses as much as digits as its factorization.

231506543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10465.

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

The square root of 231506543 is about 15215.3390695048. The cubic root of 231506543 is about 614.0274075554.

The spelling of 231506543 in words is "two hundred thirty-one million, five hundred six thousand, five hundred forty-three".