203105115013 has 8 divisors (see below), whose sum is σ = 209221246080. Its totient is φ = 197044333920.

The previous prime is 203105115007. The next prime is 203105115041. The reversal of 203105115013 is 310511501302.

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 203105115013 - 2¹³ = 203105106821 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 (203105112013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13830045 + ... + 13844722.

It is an arithmetic number, because the mean of its divisors is an integer number (26152655760).

Almost surely, 2^203105115013 is an apocalyptic number.

It is an amenable number.

203105115013 is a deficient number, since it is larger than the sum of its proper divisors (6116131067).

203105115013 is a wasteful number, since it uses less digits than its factorization.

203105115013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27674987.

The product of its (nonzero) digits is 450, while the sum is 22.

Adding to 203105115013 its reverse (310511501302), we get a palindrome (513616616315).

The spelling of 203105115013 in words is "two hundred three billion, one hundred five million, one hundred fifteen thousand, thirteen".