203321133132 has 144 divisors (see below), whose sum is σ = 530079685632. Its totient is φ = 60595292160.

The previous prime is 203321133131. The next prime is 203321133133. The reversal of 203321133132 is 231331123302.

It is an interprime number because it is at equal distance from previous prime (203321133131) and next prime (203321133133).

It is not an unprimeable number, because it can be changed into a prime (203321133131) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9234657 + ... + 9256647.

It is an arithmetic number, because the mean of its divisors is an integer number (3681108928).

Almost surely, 2^203321133132 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 203321133132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (265039842816).

203321133132 is an abundant number, since it is smaller than the sum of its proper divisors (326758552500).

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

203321133132 is a wasteful number, since it uses less digits than its factorization.

203321133132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22168 (or 22153 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 203321133132 its reverse (231331123302), we get a palindrome (434652256434).

The spelling of 203321133132 in words is "two hundred three billion, three hundred twenty-one million, one hundred thirty-three thousand, one hundred thirty-two".