203420213311 has 16 divisors (see below), whose sum is σ = 241785840640. Its totient is φ = 167500288800.

The previous prime is 203420213279. The next prime is 203420213333. The reversal of 203420213311 is 113312024302.

It is a cyclic number.

It is not a de Polignac number, because 203420213311 - 2⁵ = 203420213279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203420213111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4950465 + ... + 4991386.

It is an arithmetic number, because the mean of its divisors is an integer number (15111615040).

Almost surely, 2^203420213311 is an apocalyptic number.

203420213311 is a deficient number, since it is larger than the sum of its proper divisors (38365627329).

203420213311 is an equidigital number, since it uses as much as digits as its factorization.

203420213311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9941974.

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

Adding to 203420213311 its reverse (113312024302), we get a palindrome (316732237613).

The spelling of 203420213311 in words is "two hundred three billion, four hundred twenty million, two hundred thirteen thousand, three hundred eleven".