203521245243 has 8 divisors (see below), whose sum is σ = 271366525248. Its totient is φ = 135678397704.

The previous prime is 203521245223. The next prime is 203521245299. The reversal of 203521245243 is 342542125302.

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

It is not a de Polignac number, because 203521245243 - 2²⁸ = 203252809787 is a prime.

It is a super-2 number, since 2×203521245243² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (203521245203) 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, 403005 + ... + 754622.

It is an arithmetic number, because the mean of its divisors is an integer number (33920815656).

Almost surely, 2^203521245243 is an apocalyptic number.

203521245243 is a deficient number, since it is larger than the sum of its proper divisors (67845280005).

203521245243 is a wasteful number, since it uses less digits than its factorization.

203521245243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1216233.

The product of its (nonzero) digits is 57600, while the sum is 33.

The spelling of 203521245243 in words is "two hundred three billion, five hundred twenty-one million, two hundred forty-five thousand, two hundred forty-three".