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213231304201 = 349610977949
BaseRepresentation
bin1100011010010110010…
…0110111111000001001
3202101101110022120200011
43012211210313320021
511443144203213301
6241542422511521
721256033115626
oct3064544677011
9671343276604
10213231304201
118248156a953
12353aa8955a1
13171525b8966
14a46b45b34d
15582ed65a51
hex31a5937e09

213231304201 has 4 divisors (see below), whose sum is σ = 213842282500. Its totient is φ = 212620325904.

The previous prime is 213231304163. The next prime is 213231304259. The reversal of 213231304201 is 102403132312.

213231304201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 62050311801 + 151180992400 = 249099^2 + 388820^2 .

It is a cyclic number.

It is not a de Polignac number, because 213231304201 - 213 = 213231296009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213231304261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 305488626 + ... + 305489323.

It is an arithmetic number, because the mean of its divisors is an integer number (53460570625).

Almost surely, 2213231304201 is an apocalyptic number.

It is an amenable number.

213231304201 is a deficient number, since it is larger than the sum of its proper divisors (610978299).

213231304201 is an equidigital number, since it uses as much as digits as its factorization.

213231304201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610978298.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 213231304201 its reverse (102403132312), we get a palindrome (315634436513).

The spelling of 213231304201 in words is "two hundred thirteen billion, two hundred thirty-one million, three hundred four thousand, two hundred one".

Divisors: 1 349 610977949 213231304201