203355040345 has 8 divisors (see below), whose sum is σ = 244089405576. Its totient is φ = 162641794176.

The previous prime is 203355040333. The next prime is 203355040363. The reversal of 203355040345 is 543040553302.

It can be written as a sum of positive squares in 4 ways, for example, as 88929800521 + 114425239824 = 298211^2 + 338268^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 203355040345 - 2²³ = 203346651737 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 203355040345.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5258572 + ... + 5297101.

It is an arithmetic number, because the mean of its divisors is an integer number (30511175697).

Almost surely, 2^203355040345 is an apocalyptic number.

It is an amenable number.

203355040345 is a deficient number, since it is larger than the sum of its proper divisors (40734365231).

203355040345 is a wasteful number, since it uses less digits than its factorization.

203355040345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10559531.

The product of its (nonzero) digits is 108000, while the sum is 34.

Adding to 203355040345 its reverse (543040553302), we get a palindrome (746395593647).

The spelling of 203355040345 in words is "two hundred three billion, three hundred fifty-five million, forty thousand, three hundred forty-five".