203453345 has 8 divisors (see below), whose sum is σ = 244555200. Its totient is φ = 162488560.

The previous prime is 203453293. The next prime is 203453353. The reversal of 203453345 is 543354302.

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

It is not a de Polignac number, because 203453345 - 2⁶ = 203453281 is a prime.

It is a Curzon number.

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 7 ways as a sum of consecutive naturals, for example, 30971 + ... + 36960.

It is an arithmetic number, because the mean of its divisors is an integer number (30569400).

Almost surely, 2^203453345 is an apocalyptic number.

It is an amenable number.

203453345 is a deficient number, since it is larger than the sum of its proper divisors (41101855).

203453345 is an equidigital number, since it uses as much as digits as its factorization.

203453345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68535.

The product of its (nonzero) digits is 21600, while the sum is 29.

The square root of 203453345 is about 14263.7072670467. The cubic root of 203453345 is about 588.1502394641.

The spelling of 203453345 in words is "two hundred three million, four hundred fifty-three thousand, three hundred forty-five".