31712174653 has 4 divisors (see below), whose sum is σ = 31717786140. Its totient is φ = 31706563168.

The previous prime is 31712174621. The next prime is 31712174671. The reversal of 31712174653 is 35647121713.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11850064164 + 19862110489 = 108858^2 + 140933^2 .

It is a cyclic number.

It is not a de Polignac number, because 31712174653 - 2⁵ = 31712174621 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 (31712174953) 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, 2797258 + ... + 2808571.

It is an arithmetic number, because the mean of its divisors is an integer number (7929446535).

Almost surely, 2^31712174653 is an apocalyptic number.

It is an amenable number.

31712174653 is a deficient number, since it is larger than the sum of its proper divisors (5611487).

31712174653 is an equidigital number, since it uses as much as digits as its factorization.

31712174653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5611486.

The product of its digits is 105840, while the sum is 40.

The spelling of 31712174653 in words is "thirty-one billion, seven hundred twelve million, one hundred seventy-four thousand, six hundred fifty-three".