231205201 has 8 divisors (see below), whose sum is σ = 232847784. Its totient is φ = 229568640.

The previous prime is 231205187. The next prime is 231205207. The reversal of 231205201 is 102502132.

It can be written as a sum of positive squares in 4 ways, for example, as 19793601 + 211411600 = 4449^2 + 14540^2 .

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 231205201 - 2¹³ = 231197009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231205207) 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, 96915 + ... + 99271.

It is an arithmetic number, because the mean of its divisors is an integer number (29105973).

Almost surely, 2^231205201 is an apocalyptic number.

It is an amenable number.

231205201 is a deficient number, since it is larger than the sum of its proper divisors (1642583).

231205201 is a wasteful number, since it uses less digits than its factorization.

231205201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3011.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 231205201 is about 15205.4332723537. The cubic root of 231205201 is about 613.7608742852.

Adding to 231205201 its reverse (102502132), we get a palindrome (333707333).

The spelling of 231205201 in words is "two hundred thirty-one million, two hundred five thousand, two hundred one".