201432321 has 24 divisors (see below), whose sum is σ = 304776576. Its totient is φ = 127955520.

The previous prime is 201432299. The next prime is 201432323. The reversal of 201432321 is 123234102.

201432321 is a `hidden beast` number, since 201 + 432 + 32 + 1 = 666.

It is not a de Polignac number, because 201432321 - 2¹³ = 201424129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201432294 and 201432303.

It is not an unprimeable number, because it can be changed into a prime (201432323) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56436 + ... + 59898.

It is an arithmetic number, because the mean of its divisors is an integer number (12699024).

Almost surely, 2^201432321 is an apocalyptic number.

It is an amenable number.

201432321 is a deficient number, since it is larger than the sum of its proper divisors (103344255).

201432321 is a wasteful number, since it uses less digits than its factorization.

201432321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3773 (or 3770 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 201432321 is about 14192.6854752721. The cubic root of 201432321 is about 586.1962722041.

Adding to 201432321 its reverse (123234102), we get a palindrome (324666423).

It can be divided in two parts, 20 and 1432321, that added together give a palindrome (1432341).

The spelling of 201432321 in words is "two hundred one million, four hundred thirty-two thousand, three hundred twenty-one".