203210431220 has 48 divisors (see below), whose sum is σ = 445368405888. Its totient is φ = 77737418880.

The previous prime is 203210431129. The next prime is 203210431271. The reversal of 203210431220 is 22134012302.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 203210431192 and 203210431201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3086687 + ... + 3151833.

It is an arithmetic number, because the mean of its divisors is an integer number (9278508456).

Almost surely, 2^203210431220 is an apocalyptic number.

203210431220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203210431220 is an abundant number, since it is smaller than the sum of its proper divisors (242157974668).

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

203210431220 is a wasteful number, since it uses less digits than its factorization.

203210431220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71960 (or 71958 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 203210431220 its reverse (22134012302), we get a palindrome (225344443522).

The spelling of 203210431220 in words is "two hundred three billion, two hundred ten million, four hundred thirty-one thousand, two hundred twenty".