31347386211 has 4 divisors (see below), whose sum is σ = 41796514952. Its totient is φ = 20898257472.

The previous prime is 31347386173. The next prime is 31347386219. The reversal of 31347386211 is 11268374313.

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

It is not a de Polignac number, because 31347386211 - 2¹⁷ = 31347255139 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31347386211.

It is not an unprimeable number, because it can be changed into a prime (31347386219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5224564366 + ... + 5224564371.

It is an arithmetic number, because the mean of its divisors is an integer number (10449128738).

Almost surely, 2^31347386211 is an apocalyptic number.

31347386211 is a deficient number, since it is larger than the sum of its proper divisors (10449128741).

31347386211 is a wasteful number, since it uses less digits than its factorization.

31347386211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10449128740.

The product of its digits is 72576, while the sum is 39.

The spelling of 31347386211 in words is "thirty-one billion, three hundred forty-seven million, three hundred eighty-six thousand, two hundred eleven".