231602201 has 4 divisors (see below), whose sum is σ = 233651892. Its totient is φ = 229552512.

The previous prime is 231602197. The next prime is 231602221. The reversal of 231602201 is 102206132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 97042201 + 134560000 = 9851^2 + 11600^2 .

It is a cyclic number.

It is not a de Polignac number, because 231602201 - 2² = 231602197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 231602201.

It is not an unprimeable number, because it can be changed into a prime (231602221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1024676 + ... + 1024901.

It is an arithmetic number, because the mean of its divisors is an integer number (58412973).

Almost surely, 2^231602201 is an apocalyptic number.

It is an amenable number.

231602201 is a deficient number, since it is larger than the sum of its proper divisors (2049691).

231602201 is a wasteful number, since it uses less digits than its factorization.

231602201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2049690.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 231602201 is about 15218.4822173566. The cubic root of 231602201 is about 614.1119675062. Note that the first 3 decimals are identical.

Adding to 231602201 its reverse (102206132), we get a palindrome (333808333).

The spelling of 231602201 in words is "two hundred thirty-one million, six hundred two thousand, two hundred one".