31103002002013 has 4 divisors (see below), whose sum is σ = 31103020004220. Its totient is φ = 31102983999808.

The previous prime is 31103002001923. The next prime is 31103002002019. The reversal of 31103002002013 is 31020020030113.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 178525685529 + 30924476316484 = 422523^2 + 5560978^2 .

It is a cyclic number.

It is not a de Polignac number, because 31103002002013 - 2²¹ = 31102999904861 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 (31103002002019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6097228 + ... + 9969061.

It is an arithmetic number, because the mean of its divisors is an integer number (7775755001055).

Almost surely, 2^{31103002002013} is an apocalyptic number.

It is an amenable number.

31103002002013 is a deficient number, since it is larger than the sum of its proper divisors (18002207).

31103002002013 is a wasteful number, since it uses less digits than its factorization.

31103002002013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18002206.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 31103002002013 its reverse (31020020030113), we get a palindrome (62123022032126).

The spelling of 31103002002013 in words is "thirty-one trillion, one hundred three billion, two million, two thousand, thirteen".