31368432713 has 8 divisors (see below), whose sum is σ = 31970737800. Its totient is φ = 30766514688.

The previous prime is 31368432703. The next prime is 31368432757. The reversal of 31368432713 is 31723486313.

It can be written as a sum of positive squares in 4 ways, for example, as 77299264 + 31291133449 = 8792^2 + 176893^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31368432713 - 2²⁰ = 31367384137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31368432703) 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 7 ways as a sum of consecutive naturals, for example, 69593 + ... + 259961.

It is an arithmetic number, because the mean of its divisors is an integer number (3996342225).

Almost surely, 2^31368432713 is an apocalyptic number.

It is an amenable number.

31368432713 is a deficient number, since it is larger than the sum of its proper divisors (602305087).

31368432713 is a wasteful number, since it uses less digits than its factorization.

31368432713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193531.

The product of its digits is 217728, while the sum is 41.

The spelling of 31368432713 in words is "thirty-one billion, three hundred sixty-eight million, four hundred thirty-two thousand, seven hundred thirteen".