203122340310205 has 16 divisors (see below), whose sum is σ = 248352147491760. Its totient is φ = 159427802779648.

The previous prime is 203122340310173. The next prime is 203122340310217. The reversal of 203122340310205 is 502013043221302.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 13748329599876 + 189374010710329 = 3707874^2 + 13761323^2 .

It is a cyclic number.

It is not a de Polignac number, because 203122340310205 - 2⁵ = 203122340310173 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 628191 + ... + 20165299.

It is an arithmetic number, because the mean of its divisors is an integer number (15522009218235).

Almost surely, 2^{203122340310205} is an apocalyptic number.

It is an amenable number.

203122340310205 is a deficient number, since it is larger than the sum of its proper divisors (45229807181555).

203122340310205 is a wasteful number, since it uses less digits than its factorization.

203122340310205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19576400.

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 203122340310205 its reverse (502013043221302), we get a palindrome (705135383531507).

The spelling of 203122340310205 in words is "two hundred three trillion, one hundred twenty-two billion, three hundred forty million, three hundred ten thousand, two hundred five".