31212103133113 has 8 divisors (see below), whose sum is σ = 36635055415232. Its totient is φ = 26030170952496.

The previous prime is 31212103133017. The next prime is 31212103133129. The reversal of 31212103133113 is 31133130121213.

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-31212103133113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31212106133113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60255025095 + ... + 60255025612.

It is an arithmetic number, because the mean of its divisors is an integer number (4579381926904).

Almost surely, 2^{31212103133113} is an apocalyptic number.

It is an amenable number.

31212103133113 is a deficient number, since it is larger than the sum of its proper divisors (5422952282119).

31212103133113 is a wasteful number, since it uses less digits than its factorization.

31212103133113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120510050751.

The product of its (nonzero) digits is 972, while the sum is 25.

Adding to 31212103133113 its reverse (31133130121213), we get a palindrome (62345233254326).

The spelling of 31212103133113 in words is "thirty-one trillion, two hundred twelve billion, one hundred three million, one hundred thirty-three thousand, one hundred thirteen".