203135424 has 56 divisors (see below), whose sum is σ = 545518848. Its totient is φ = 66696960.

The previous prime is 203135417. The next prime is 203135477. The reversal of 203135424 is 424531302.

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 = 203135394 and 203135403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4969 + ... + 20759.

It is an arithmetic number, because the mean of its divisors is an integer number (9741408).

Almost surely, 2^203135424 is an apocalyptic number.

203135424 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 203135424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (272759424).

203135424 is an abundant number, since it is smaller than the sum of its proper divisors (342383424).

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

203135424 is a wasteful number, since it uses less digits than its factorization.

203135424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15873 (or 15863 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 203135424 is about 14252.5585071593. The cubic root of 203135424 is about 587.8437272711.

Adding to 203135424 its reverse (424531302), we get a palindrome (627666726).

The spelling of 203135424 in words is "two hundred three million, one hundred thirty-five thousand, four hundred twenty-four".