31206640131113 has 8 divisors (see below), whose sum is σ = 31229901447168. Its totient is φ = 31183380887904.

The previous prime is 31206640131097. The next prime is 31206640131119. The reversal of 31206640131113 is 31113104660213.

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 31206640131113 - 2⁴ = 31206640131097 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 31206640131113.

It is not an unprimeable number, because it can be changed into a prime (31206640131119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30284120 + ... + 31297622.

It is an arithmetic number, because the mean of its divisors is an integer number (3903737680896).

Almost surely, 2^{31206640131113} is an apocalyptic number.

It is an amenable number.

31206640131113 is a deficient number, since it is larger than the sum of its proper divisors (23261316055).

31206640131113 is a wasteful number, since it uses less digits than its factorization.

31206640131113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1036423.

The product of its (nonzero) digits is 7776, while the sum is 32.

Adding to 31206640131113 its reverse (31113104660213), we get a palindrome (62319744791326).

The spelling of 31206640131113 in words is "thirty-one trillion, two hundred six billion, six hundred forty million, one hundred thirty-one thousand, one hundred thirteen".