203231420 has 72 divisors (see below), whose sum is σ = 513656640. Its totient is φ = 67267200.

The previous prime is 203231419. The next prime is 203231423. The reversal of 203231420 is 24132302.

203231420 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203231423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24845 + ... + 31995.

It is an arithmetic number, because the mean of its divisors is an integer number (7134120).

Almost surely, 2^203231420 is an apocalyptic number.

203231420 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 203231420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (256828320).

203231420 is an abundant number, since it is smaller than the sum of its proper divisors (310425220).

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

203231420 is a wasteful number, since it uses less digits than its factorization.

203231420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7203 (or 7194 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 203231420 is about 14255.9257854409. The cubic root of 203231420 is about 587.9363120741.

Adding to 203231420 its reverse (24132302), we get a palindrome (227363722).

The spelling of 203231420 in words is "two hundred three million, two hundred thirty-one thousand, four hundred twenty".