31271013111 has 16 divisors (see below), whose sum is σ = 45470351360. Its totient is φ = 19000107360.

The previous prime is 31271013071. The next prime is 31271013131. The reversal of 31271013111 is 11131017213.

It is a de Polignac number, because none of the positive numbers 2^k-31271013111 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 (31271013131) 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 15 ways as a sum of consecutive naturals, for example, 5071735 + ... + 5077896.

It is an arithmetic number, because the mean of its divisors is an integer number (2841896960).

Almost surely, 2^31271013111 is an apocalyptic number.

31271013111 is a deficient number, since it is larger than the sum of its proper divisors (14199338249).

31271013111 is a wasteful number, since it uses less digits than its factorization.

31271013111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10149726.

The product of its (nonzero) digits is 126, while the sum is 21.

The spelling of 31271013111 in words is "thirty-one billion, two hundred seventy-one million, thirteen thousand, one hundred eleven".