203401100311 has 8 divisors (see below), whose sum is σ = 214699521200. Its totient is φ = 192695772744.

The previous prime is 203401100263. The next prime is 203401100333. The reversal of 203401100311 is 113001104302.

It is not a de Polignac number, because 203401100311 - 2¹³ = 203401092119 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203401100411) 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 7 ways as a sum of consecutive naturals, for example, 14820456 + ... + 14834173.

It is an arithmetic number, because the mean of its divisors is an integer number (26837440150).

Almost surely, 2^203401100311 is an apocalyptic number.

203401100311 is a deficient number, since it is larger than the sum of its proper divisors (11298420889).

203401100311 is an frugal number, since it uses more digits than its factorization.

203401100311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29654686 (or 29654648 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 203401100311 its reverse (113001104302), we get a palindrome (316402204613).

The spelling of 203401100311 in words is "two hundred three billion, four hundred one million, one hundred thousand, three hundred eleven".