231543201 has 8 divisors (see below), whose sum is σ = 312193440. Its totient is φ = 152627552.

The previous prime is 231543187. The next prime is 231543203. The reversal of 231543201 is 102345132.

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 231543201 - 2²³ = 223154593 is a prime.

It is a super-2 number, since 2×231543201² = 107224507858652802, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231543203) by changing a digit.

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, 433335 + ... + 433868.

It is an arithmetic number, because the mean of its divisors is an integer number (39024180).

Almost surely, 2^231543201 is an apocalyptic number.

It is an amenable number.

231543201 is a deficient number, since it is larger than the sum of its proper divisors (80650239).

231543201 is an equidigital number, since it uses as much as digits as its factorization.

231543201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 867295.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 231543201 is about 15216.5436614232. The cubic root of 231543201 is about 614.0598153202.

Adding to 231543201 its reverse (102345132), we get a palindrome (333888333).

The spelling of 231543201 in words is "two hundred thirty-one million, five hundred forty-three thousand, two hundred one".