203313220405 has 32 divisors (see below), whose sum is σ = 256764328704. Its totient is φ = 154250443776.

The previous prime is 203313220391. The next prime is 203313220469. The reversal of 203313220405 is 504022313302.

It is a cyclic number.

It is not a de Polignac number, because 203313220405 - 2¹⁷ = 203313089333 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 203313220405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8419629 + ... + 8443741.

It is an arithmetic number, because the mean of its divisors is an integer number (8023885272).

Almost surely, 2^203313220405 is an apocalyptic number.

It is an amenable number.

203313220405 is a deficient number, since it is larger than the sum of its proper divisors (53451108299).

203313220405 is a wasteful number, since it uses less digits than its factorization.

203313220405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24765.

The product of its (nonzero) digits is 4320, while the sum is 25.

Adding to 203313220405 its reverse (504022313302), we get a palindrome (707335533707).

The spelling of 203313220405 in words is "two hundred three billion, three hundred thirteen million, two hundred twenty thousand, four hundred five".