203450312 has 48 divisors (see below), whose sum is σ = 427396500. Its totient is φ = 90644736.

The previous prime is 203450297. The next prime is 203450321. The reversal of 203450312 is 213054302.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 57668836 + 145781476 = 7594^2 + 12074^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36614 + ... + 41802.

Almost surely, 2^203450312 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 203450312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (213698250).

203450312 is an abundant number, since it is smaller than the sum of its proper divisors (223946188).

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

203450312 is a wasteful number, since it uses less digits than its factorization.

203450312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5250 (or 5233 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 203450312 is about 14263.6009478673. The cubic root of 203450312 is about 588.1473168144.

The spelling of 203450312 in words is "two hundred three million, four hundred fifty thousand, three hundred twelve".