203013120 has 88 divisors (see below), whose sum is σ = 649373904. Its totient is φ = 54132736.

The previous prime is 203013091. The next prime is 203013127. The reversal of 203013120 is 21310302.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 203013096 and 203013105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203013127) 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, 8752 + ... + 21968.

Almost surely, 2^203013120 is an apocalyptic number.

203013120 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 203013120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (324686952).

203013120 is an abundant number, since it is smaller than the sum of its proper divisors (446360784).

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

203013120 is a wasteful number, since it uses less digits than its factorization.

203013120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13245 (or 13227 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 203013120 is about 14248.2672630745. The cubic root of 203013120 is about 587.7257270530.

Adding to 203013120 its reverse (21310302), we get a palindrome (224323422).

The spelling of 203013120 in words is "two hundred three million, thirteen thousand, one hundred twenty".