203113321342550 has 48 divisors (see below), whose sum is σ = 381328268285952. Its totient is φ = 80484604701600.

The previous prime is 203113321342513. The next prime is 203113321342559. The reversal of 203113321342550 is 55243123311302.

It is a super-3 number, since 3×203113321342550³ (a number of 44 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 203113321342550.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203113321342559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 333658955 + ... + 334267145.

It is an arithmetic number, because the mean of its divisors is an integer number (7944338922624).

Almost surely, 2^{203113321342550} is an apocalyptic number.

203113321342550 is a deficient number, since it is larger than the sum of its proper divisors (178214946943402).

203113321342550 is a wasteful number, since it uses less digits than its factorization.

203113321342550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670733 (or 670728 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 35.

Adding to 203113321342550 its reverse (55243123311302), we get a palindrome (258356444653852).

The spelling of 203113321342550 in words is "two hundred three trillion, one hundred thirteen billion, three hundred twenty-one million, three hundred forty-two thousand, five hundred fifty".