203513120212243 has 8 divisors (see below), whose sum is σ = 209218765378896. Its totient is φ = 197842804118400.

The previous prime is 203513120212231. The next prime is 203513120212253. The reversal of 203513120212243 is 342212021315302.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203513120212243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203513120212253) 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, 8832256521 + ... + 8832279562.

It is an arithmetic number, because the mean of its divisors is an integer number (26152345672362).

Almost surely, 2^{203513120212243} is an apocalyptic number.

203513120212243 is a deficient number, since it is larger than the sum of its proper divisors (5705645166653).

203513120212243 is a wasteful number, since it uses less digits than its factorization.

203513120212243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17664536405.

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 203513120212243 its reverse (342212021315302), we get a palindrome (545725141527545).

The spelling of 203513120212243 in words is "two hundred three trillion, five hundred thirteen billion, one hundred twenty million, two hundred twelve thousand, two hundred forty-three".