203215400011 has 32 divisors (see below), whose sum is σ = 236219215680. Its totient is φ = 173203660800.

The previous prime is 203215400009. The next prime is 203215400021. The reversal of 203215400011 is 110004512302.

203215400011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 203215400011 - 2¹ = 203215400009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203215400021) 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 31 ways as a sum of consecutive naturals, for example, 10735291 + ... + 10754203.

It is an arithmetic number, because the mean of its divisors is an integer number (7381850490).

Almost surely, 2^203215400011 is an apocalyptic number.

203215400011 is a deficient number, since it is larger than the sum of its proper divisors (33003815669).

203215400011 is a wasteful number, since it uses less digits than its factorization.

203215400011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20047.

The product of its (nonzero) digits is 240, while the sum is 19.

Adding to 203215400011 its reverse (110004512302), we get a palindrome (313219912313).

The spelling of 203215400011 in words is "two hundred three billion, two hundred fifteen million, four hundred thousand, eleven".