20131312102013 has 8 divisors (see below), whose sum is σ = 23011607077632. Its totient is φ = 17252115438096.

The previous prime is 20131312101997. The next prime is 20131312102043. The reversal of 20131312102013 is 31020121313102.

It is a happy number.

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

It is not a de Polignac number, because 20131312102013 - 2⁴ = 20131312101997 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 (20131312102043) 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, 274538645 + ... + 274611962.

It is an arithmetic number, because the mean of its divisors is an integer number (2876450884704).

Almost surely, 2^{20131312102013} is an apocalyptic number.

It is an amenable number.

20131312102013 is a deficient number, since it is larger than the sum of its proper divisors (2880294975619).

20131312102013 is an equidigital number, since it uses as much as digits as its factorization.

20131312102013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549155851.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 20131312102013 its reverse (31020121313102), we get a palindrome (51151433415115).

The spelling of 20131312102013 in words is "twenty trillion, one hundred thirty-one billion, three hundred twelve million, one hundred two thousand, thirteen".