203211323313 has 4 divisors (see below), whose sum is σ = 270948431088. Its totient is φ = 135474215540.

The previous prime is 203211323311. The next prime is 203211323353. The reversal of 203211323313 is 313323112302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 203211323313 - 2¹ = 203211323311 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (203211323311) 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, 33868553883 + ... + 33868553888.

It is an arithmetic number, because the mean of its divisors is an integer number (67737107772).

Almost surely, 2^203211323313 is an apocalyptic number.

It is an amenable number.

203211323313 is a deficient number, since it is larger than the sum of its proper divisors (67737107775).

203211323313 is an equidigital number, since it uses as much as digits as its factorization.

203211323313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67737107774.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 203211323313 its reverse (313323112302), we get a palindrome (516534435615).

The spelling of 203211323313 in words is "two hundred three billion, two hundred eleven million, three hundred twenty-three thousand, three hundred thirteen".