31281911103 has 8 divisors (see below), whose sum is σ = 41750150400. Its totient is φ = 20834139608.

The previous prime is 31281911071. The next prime is 31281911159. The reversal of 31281911103 is 30111918213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31281911103 - 2⁵ = 31281911071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31281911173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5113383 + ... + 5119496.

It is an arithmetic number, because the mean of its divisors is an integer number (5218768800).

Almost surely, 2^31281911103 is an apocalyptic number.

31281911103 is a deficient number, since it is larger than the sum of its proper divisors (10468239297).

31281911103 is a wasteful number, since it uses less digits than its factorization.

31281911103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10233901.

The product of its (nonzero) digits is 1296, while the sum is 30.

The spelling of 31281911103 in words is "thirty-one billion, two hundred eighty-one million, nine hundred eleven thousand, one hundred three".