203225813 has 8 divisors (see below), whose sum is σ = 234389760. Its totient is φ = 172594800.

The previous prime is 203225779. The next prime is 203225819. The reversal of 203225813 is 318522302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 203225813 - 2¹⁰ = 203224789 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203225819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132413 + ... + 133938.

It is an arithmetic number, because the mean of its divisors is an integer number (29298720).

Almost surely, 2^203225813 is an apocalyptic number.

It is an amenable number.

203225813 is a deficient number, since it is larger than the sum of its proper divisors (31163947).

203225813 is a wasteful number, since it uses less digits than its factorization.

203225813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266467.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 203225813 is about 14255.7291290204. The cubic root of 203225813 is about 587.9309051194.

The spelling of 203225813 in words is "two hundred three million, two hundred twenty-five thousand, eight hundred thirteen".