31118201803001 has 4 divisors (see below), whose sum is σ = 31146672254052. Its totient is φ = 31089731351952.

The previous prime is 31118201802979. The next prime is 31118201803067. The reversal of 31118201803001 is 10030810281113.

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 25985933569600 + 5132268233401 = 5097640^2 + 2265451^2 .

It is a cyclic number.

It is not a de Polignac number, because 31118201803001 - 2⁶ = 31118201802937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31118201803201) 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, 14235223886 + ... + 14235226071.

It is an arithmetic number, because the mean of its divisors is an integer number (7786668063513).

Almost surely, 2^{31118201803001} is an apocalyptic number.

It is an amenable number.

31118201803001 is a deficient number, since it is larger than the sum of its proper divisors (28470451051).

31118201803001 is a wasteful number, since it uses less digits than its factorization.

31118201803001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28470451050.

The product of its (nonzero) digits is 1152, while the sum is 29.

The spelling of 31118201803001 in words is "thirty-one trillion, one hundred eighteen billion, two hundred one million, eight hundred three thousand, one".