203545040101 has 16 divisors (see below), whose sum is σ = 234225961200. Its totient is φ = 175213145088.

The previous prime is 203545040099. The next prime is 203545040107. The reversal of 203545040101 is 101040545302.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 6400160001 + 197144880100 = 80001^2 + 444010^2 .

It is a cyclic number.

It is not a de Polignac number, because 203545040101 - 2¹ = 203545040099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203545040107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4200766 + ... + 4248943.

It is an arithmetic number, because the mean of its divisors is an integer number (14639122575).

Almost surely, 2^203545040101 is an apocalyptic number.

It is an amenable number.

203545040101 is a deficient number, since it is larger than the sum of its proper divisors (30680921099).

203545040101 is a wasteful number, since it uses less digits than its factorization.

203545040101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8449848.

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 203545040101 its reverse (101040545302), we get a palindrome (304585585403).

The spelling of 203545040101 in words is "two hundred three billion, five hundred forty-five million, forty thousand, one hundred one".