203232231220 has 12 divisors (see below), whose sum is σ = 426787685604. Its totient is φ = 81292892480.

The previous prime is 203232231211. The next prime is 203232231263. The reversal of 203232231220 is 22132232302.

It can be written as a sum of positive squares in 2 ways, for example, as 140012169124 + 63220062096 = 374182^2 + 251436^2 .

It is a junction number, because it is equal to n+sod(n) for n = 203232231191 and 203232231200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5080805761 + ... + 5080805800.

It is an arithmetic number, because the mean of its divisors is an integer number (35565640467).

Almost surely, 2^203232231220 is an apocalyptic number.

203232231220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203232231220 is an abundant number, since it is smaller than the sum of its proper divisors (223555454384).

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

203232231220 is a wasteful number, since it uses less digits than its factorization.

203232231220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10161611570 (or 10161611568 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 203232231220 its reverse (22132232302), we get a palindrome (225364463522).

The spelling of 203232231220 in words is "two hundred three billion, two hundred thirty-two million, two hundred thirty-one thousand, two hundred twenty".