31706711540 has 48 divisors (see below), whose sum is σ = 76112168832. Its totient is φ = 10868578176.

The previous prime is 31706711539. The next prime is 31706711579. The reversal of 31706711540 is 4511760713.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 31706711540.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 725387 + ... + 767853.

It is an arithmetic number, because the mean of its divisors is an integer number (1585670184).

Almost surely, 2^31706711540 is an apocalyptic number.

It is an amenable number.

31706711540 is an abundant number, since it is smaller than the sum of its proper divisors (44405457292).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31706711540 is a wasteful number, since it uses less digits than its factorization.

31706711540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47816 (or 47814 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 35.

The spelling of 31706711540 in words is "thirty-one billion, seven hundred six million, seven hundred eleven thousand, five hundred forty".