203422530 has 64 divisors (see below), whose sum is σ = 512127360. Its totient is φ = 51641856.

The previous prime is 203422529. The next prime is 203422537. The reversal of 203422530 is 35224302.

It is a junction number, because it is equal to n+sod(n) for n = 203422497 and 203422506.

It is not an unprimeable number, because it can be changed into a prime (203422537) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61909 + ... + 65111.

It is an arithmetic number, because the mean of its divisors is an integer number (8001990).

Almost surely, 2^203422530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 203422530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (256063680).

203422530 is an abundant number, since it is smaller than the sum of its proper divisors (308704830).

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

203422530 is a wasteful number, since it uses less digits than its factorization.

203422530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3315.

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 203422530 is about 14262.6270371205. The cubic root of 203422530 is about 588.1205442618.

Adding to 203422530 its reverse (35224302), we get a palindrome (238646832).

The spelling of 203422530 in words is "two hundred three million, four hundred twenty-two thousand, five hundred thirty".