20113231031213 has 8 divisors (see below), whose sum is σ = 20322842904000. Its totient is φ = 19903665260160.

The previous prime is 20113231031207. The next prime is 20113231031239. The reversal of 20113231031213 is 31213013231102.

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 20113231031213 - 2⁸ = 20113231030957 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 (20113231037213) 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, 10647983 + ... + 12393788.

It is an arithmetic number, because the mean of its divisors is an integer number (2540355363000).

Almost surely, 2^{20113231031213} is an apocalyptic number.

It is an amenable number.

20113231031213 is a deficient number, since it is larger than the sum of its proper divisors (209611872787).

20113231031213 is an equidigital number, since it uses as much as digits as its factorization.

20113231031213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23050867.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 20113231031213 its reverse (31213013231102), we get a palindrome (51326244262315).

The spelling of 20113231031213 in words is "twenty trillion, one hundred thirteen billion, two hundred thirty-one million, thirty-one thousand, two hundred thirteen".