31713860747 has 4 divisors (see below), whose sum is σ = 31926705600. Its totient is φ = 31501015896.

The previous prime is 31713860729. The next prime is 31713860771. The reversal of 31713860747 is 74706831713.

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

It is a cyclic number.

It is not a de Polignac number, because 31713860747 - 2¹⁴ = 31713844363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31713860147) 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 3 ways as a sum of consecutive naturals, for example, 106422203 + ... + 106422500.

It is an arithmetic number, because the mean of its divisors is an integer number (7981676400).

Almost surely, 2^31713860747 is an apocalyptic number.

31713860747 is a deficient number, since it is larger than the sum of its proper divisors (212844853).

31713860747 is a wasteful number, since it uses less digits than its factorization.

31713860747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212844852.

The product of its (nonzero) digits is 592704, while the sum is 47.

The spelling of 31713860747 in words is "thirty-one billion, seven hundred thirteen million, eight hundred sixty thousand, seven hundred forty-seven".