203994343332 has 72 divisors (see below), whose sum is σ = 556041045560. Its totient is φ = 62685757440.

The previous prime is 203994343331. The next prime is 203994343361. The reversal of 203994343332 is 233343499302.

203994343332 is a `hidden beast` number, since 203 + 9 + 9 + 4 + 3 + 433 + 3 + 2 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 5598930276 + 198395413056 = 74826^2 + 445416^2 .

It is a super-2 number, since 2×203994343332² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (203994343331) 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, 76482 + ... + 643302.

Almost surely, 2^203994343332 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 203994343332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (278020522780).

203994343332 is an abundant number, since it is smaller than the sum of its proper divisors (352046702228).

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

203994343332 is a wasteful number, since it uses less digits than its factorization.

203994343332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567613 (or 567608 counting only the distinct ones).

The product of its (nonzero) digits is 1259712, while the sum is 45.

The spelling of 203994343332 in words is "two hundred three billion, nine hundred ninety-four million, three hundred forty-three thousand, three hundred thirty-two".