203920004011 has 4 divisors (see below), whose sum is σ = 203931523800. Its totient is φ = 203908484224.

The previous prime is 203920004009. The next prime is 203920004017. The reversal of 203920004011 is 110400029302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 203920004011 - 2¹ = 203920004009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203920004017) 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, 5733301 + ... + 5768758.

It is an arithmetic number, because the mean of its divisors is an integer number (50982880950).

Almost surely, 2^203920004011 is an apocalyptic number.

203920004011 is a deficient number, since it is larger than the sum of its proper divisors (11519789).

203920004011 is a wasteful number, since it uses less digits than its factorization.

203920004011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11519788.

The product of its (nonzero) digits is 432, while the sum is 22.

The spelling of 203920004011 in words is "two hundred three billion, nine hundred twenty million, four thousand, eleven".