203013201123 has 8 divisors (see below), whose sum is σ = 300760298000. Its totient is φ = 135342134064.

The previous prime is 203013201089. The next prime is 203013201133. The reversal of 203013201123 is 321102310302.

203013201123 is a `hidden beast` number, since 20 + 301 + 320 + 1 + 1 + 23 = 666.

It is not a de Polignac number, because 203013201123 - 2²² = 203009006819 is a prime.

It is a super-2 number, since 2×203013201123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 203013201096 and 203013201105.

It is not an unprimeable number, because it can be changed into a prime (203013201133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3759503698 + ... + 3759503751.

It is an arithmetic number, because the mean of its divisors is an integer number (37595037250).

Almost surely, 2^203013201123 is an apocalyptic number.

203013201123 is a deficient number, since it is larger than the sum of its proper divisors (97747096877).

203013201123 is an equidigital number, since it uses as much as digits as its factorization.

203013201123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7519007458 (or 7519007452 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 203013201123 its reverse (321102310302), we get a palindrome (524115511425).

The spelling of 203013201123 in words is "two hundred three billion, thirteen million, two hundred one thousand, one hundred twenty-three".