203223532155 has 32 divisors (see below), whose sum is σ = 371654289408. Its totient is φ = 92890800000.

The previous prime is 203223532139. The next prime is 203223532159. The reversal of 203223532155 is 551235322302.

It is not a de Polignac number, because 203223532155 - 2⁴ = 203223532139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (203223532159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 774030 + ... + 1002780.

It is an arithmetic number, because the mean of its divisors is an integer number (11614196544).

Almost surely, 2^203223532155 is an apocalyptic number.

203223532155 is a deficient number, since it is larger than the sum of its proper divisors (168430757253).

203223532155 is a wasteful number, since it uses less digits than its factorization.

203223532155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237227.

The product of its (nonzero) digits is 54000, while the sum is 33.

Adding to 203223532155 its reverse (551235322302), we get a palindrome (754458854457).

The spelling of 203223532155 in words is "two hundred three billion, two hundred twenty-three million, five hundred thirty-two thousand, one hundred fifty-five".