203310320311 has 4 divisors (see below), whose sum is σ = 232354651792. Its totient is φ = 174265988832.

The previous prime is 203310320281. The next prime is 203310320327. The reversal of 203310320311 is 113023013302.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 113023013302 = 2 ⋅56511506651.

It is a cyclic number.

It is not a de Polignac number, because 203310320311 - 2¹³ = 203310312119 is a prime.

It is a super-2 number, since 2×203310320311² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203310320911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14522165730 + ... + 14522165743.

It is an arithmetic number, because the mean of its divisors is an integer number (58088662948).

Almost surely, 2^203310320311 is an apocalyptic number.

203310320311 is a deficient number, since it is larger than the sum of its proper divisors (29044331481).

203310320311 is an equidigital number, since it uses as much as digits as its factorization.

203310320311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29044331480.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 203310320311 its reverse (113023013302), we get a palindrome (316333333613).

The spelling of 203310320311 in words is "two hundred three billion, three hundred ten million, three hundred twenty thousand, three hundred eleven".