203112134320 has 80 divisors (see below), whose sum is σ = 480379575168. Its totient is φ = 79845995520.

The previous prime is 203112134287. The next prime is 203112134321. The reversal of 203112134320 is 23431211302.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 203112134291 and 203112134300.

It is not an unprimeable number, because it can be changed into a prime (203112134321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6019737 + ... + 6053383.

Almost surely, 2^203112134320 is an apocalyptic number.

203112134320 is a gapful number since it is divisible by the number (20) 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 203112134320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240189787584).

203112134320 is an abundant number, since it is smaller than the sum of its proper divisors (277267440848).

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

203112134320 is a wasteful number, since it uses less digits than its factorization.

203112134320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34958 (or 34952 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 203112134320 its reverse (23431211302), we get a palindrome (226543345622).

The spelling of 203112134320 in words is "two hundred three billion, one hundred twelve million, one hundred thirty-four thousand, three hundred twenty".