203108013 has 8 divisors (see below), whose sum is σ = 300900800. Its totient is φ = 135405324.

The previous prime is 203107999. The next prime is 203108029. The reversal of 203108013 is 310801302.

It is not a de Polignac number, because 203108013 - 2⁴ = 203107997 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 (203108053) 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, 3761233 + ... + 3761286.

It is an arithmetic number, because the mean of its divisors is an integer number (37612600).

Almost surely, 2^203108013 is an apocalyptic number.

It is an amenable number.

203108013 is a deficient number, since it is larger than the sum of its proper divisors (97792787).

203108013 is an equidigital number, since it uses as much as digits as its factorization.

203108013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7522528 (or 7522522 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 203108013 is about 14251.5968578963. The cubic root of 203108013 is about 587.8172849616.

Adding to 203108013 its reverse (310801302), we get a palindrome (513909315).

The spelling of 203108013 in words is "two hundred three million, one hundred eight thousand, thirteen".