31109005063 has 4 divisors (see below), whose sum is σ = 31129927200. Its totient is φ = 31088082928.

The previous prime is 31109005049. The next prime is 31109005069. The reversal of 31109005063 is 36050090113.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36050090113 = 105977 ⋅340169.

It is a cyclic number.

It is not a de Polignac number, because 31109005063 - 2²⁵ = 31075450631 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 (31109005069) 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, 10458838 + ... + 10461811.

It is an arithmetic number, because the mean of its divisors is an integer number (7782481800).

Almost surely, 2^31109005063 is an apocalyptic number.

31109005063 is a deficient number, since it is larger than the sum of its proper divisors (20922137).

31109005063 is a wasteful number, since it uses less digits than its factorization.

31109005063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20922136.

The product of its (nonzero) digits is 2430, while the sum is 28.

Adding to 31109005063 its reverse (36050090113), we get a palindrome (67159095176).

It can be divided in two parts, 311090050 and 63, that added together give a palindrome (311090113).

The spelling of 31109005063 in words is "thirty-one billion, one hundred nine million, five thousand, sixty-three".