203013313311 has 16 divisors (see below), whose sum is σ = 274527525888. Its totient is φ = 133421080800.

The previous prime is 203013313253. The next prime is 203013313337. The reversal of 203013313311 is 113313310302.

203013313311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 203013313311 - 2¹³ = 203013305119 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203013311311) 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 15 ways as a sum of consecutive naturals, for example, 2054245 + ... + 2150801.

It is an arithmetic number, because the mean of its divisors is an integer number (17157970368).

Almost surely, 2^203013313311 is an apocalyptic number.

203013313311 is a deficient number, since it is larger than the sum of its proper divisors (71514212577).

203013313311 is an equidigital number, since it uses as much as digits as its factorization.

203013313311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106502.

The product of its (nonzero) digits is 486, while the sum is 21.

Adding to 203013313311 its reverse (113313310302), we get a palindrome (316326623613).

The spelling of 203013313311 in words is "two hundred three billion, thirteen million, three hundred thirteen thousand, three hundred eleven".