31731672026113 has 8 divisors (see below), whose sum is σ = 32755550294016. Its totient is φ = 30707811004800.

The previous prime is 31731672026069. The next prime is 31731672026123. The reversal of 31731672026113 is 31162027613713.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31731672026113 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31731672026113.

It is not an unprimeable number, because it can be changed into a prime (31731672026123) 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, 519568 + ... + 7983313.

It is an arithmetic number, because the mean of its divisors is an integer number (4094443786752).

Almost surely, 2^{31731672026113} is an apocalyptic number.

It is an amenable number.

31731672026113 is a deficient number, since it is larger than the sum of its proper divisors (1023878267903).

31731672026113 is a wasteful number, since it uses less digits than its factorization.

31731672026113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8623295.

The product of its (nonzero) digits is 190512, while the sum is 43.

Adding to 31731672026113 its reverse (31162027613713), we get a palindrome (62893699639826).

The spelling of 31731672026113 in words is "thirty-one trillion, seven hundred thirty-one billion, six hundred seventy-two million, twenty-six thousand, one hundred thirteen".