31784248713 has 96 divisors (see below), whose sum is σ = 53945668224. Its totient is φ = 16527587328.

The previous prime is 31784248709. The next prime is 31784248721.

31784248713 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 31784248713 - 2² = 31784248709 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31784248703) 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 95 ways as a sum of consecutive naturals, for example, 15995106 + ... + 15997092.

It is an arithmetic number, because the mean of its divisors is an integer number (561934044).

Almost surely, 2^31784248713 is an apocalyptic number.

It is an amenable number.

31784248713 is a deficient number, since it is larger than the sum of its proper divisors (22161419511).

31784248713 is a wasteful number, since it uses less digits than its factorization.

31784248713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2231 (or 2224 counting only the distinct ones).

The product of its digits is 903168, while the sum is 48.

The spelling of 31784248713 in words is "thirty-one billion, seven hundred eighty-four million, two hundred forty-eight thousand, seven hundred thirteen".