203313245215523 has 12 divisors (see below), whose sum is σ = 208569509431584. Its totient is φ = 198186429038400.

The previous prime is 203313245215519. The next prime is 203313245215601. The reversal of 203313245215523 is 325512542313302.

203313245215523 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 203313245215523 - 2² = 203313245215519 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203313245215513) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49220411 + ... + 53190932.

It is an arithmetic number, because the mean of its divisors is an integer number (17380792452632).

Almost surely, 2^{203313245215523} is an apocalyptic number.

203313245215523 is a deficient number, since it is larger than the sum of its proper divisors (5256264216061).

203313245215523 is a wasteful number, since it uses less digits than its factorization.

203313245215523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102412606 (or 102412565 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 41.

Adding to 203313245215523 its reverse (325512542313302), we get a palindrome (528825787528825).

The spelling of 203313245215523 in words is "two hundred three trillion, three hundred thirteen billion, two hundred forty-five million, two hundred fifteen thousand, five hundred twenty-three".