203103203424 has 96 divisors (see below), whose sum is σ = 583776668160. Its totient is φ = 61317542400.

The previous prime is 203103203419. The next prime is 203103203467. The reversal of 203103203424 is 424302301302.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×203103203424² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 203103203394 and 203103203403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73432 + ... + 641559.

It is an arithmetic number, because the mean of its divisors is an integer number (6081006960).

Almost surely, 2^203103203424 is an apocalyptic number.

203103203424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 203103203424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (291888334080).

203103203424 is an abundant number, since it is smaller than the sum of its proper divisors (380673464736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

203103203424 is a wasteful number, since it uses less digits than its factorization.

203103203424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715284 (or 715276 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 203103203424 its reverse (424302301302), we get a palindrome (627405504726).

The spelling of 203103203424 in words is "two hundred three billion, one hundred three million, two hundred three thousand, four hundred twenty-four".