20203101631105 has 16 divisors (see below), whose sum is σ = 24610272689664. Its totient is φ = 15918206388480.

The previous prime is 20203101631103. The next prime is 20203101631121. The reversal of 20203101631105 is 50113610130202.

It is a happy number.

It is not a de Polignac number, because 20203101631105 - 2¹ = 20203101631103 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 20203101631105.

It is not an unprimeable number, because it can be changed into a prime (20203101631103) 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, 4009201 + ... + 7515310.

It is an arithmetic number, because the mean of its divisors is an integer number (1538142043104).

Almost surely, 2^{20203101631105} is an apocalyptic number.

It is an amenable number.

20203101631105 is a deficient number, since it is larger than the sum of its proper divisors (4407171058559).

20203101631105 is a wasteful number, since it uses less digits than its factorization.

20203101631105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11529816.

The product of its (nonzero) digits is 1080, while the sum is 25.

Adding to 20203101631105 its reverse (50113610130202), we get a palindrome (70316711761307).

The spelling of 20203101631105 in words is "twenty trillion, two hundred three billion, one hundred one million, six hundred thirty-one thousand, one hundred five".