203201331123 has 32 divisors (see below), whose sum is σ = 311101410816. Its totient is φ = 115567388928.

The previous prime is 203201331121. The next prime is 203201331161. The reversal of 203201331123 is 321133102302.

It is not a de Polignac number, because 203201331123 - 2¹ = 203201331121 is a prime.

It is a super-2 number, since 2×203201331123² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 203201331123.

It is not an unprimeable number, because it can be changed into a prime (203201331121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25418415 + ... + 25426407.

It is an arithmetic number, because the mean of its divisors is an integer number (9721919088).

Almost surely, 2^203201331123 is an apocalyptic number.

203201331123 is a deficient number, since it is larger than the sum of its proper divisors (107900079693).

203201331123 is a wasteful number, since it uses less digits than its factorization.

203201331123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13563.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 203201331123 its reverse (321133102302), we get a palindrome (524334433425).

The spelling of 203201331123 in words is "two hundred three billion, two hundred one million, three hundred thirty-one thousand, one hundred twenty-three".