20123313101213 has 4 divisors (see below), whose sum is σ = 22998072115680. Its totient is φ = 17248554086748.

The previous prime is 20123313101191. The next prime is 20123313101219. The reversal of 20123313101213 is 31210131332102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20123313101213 - 2⁶ = 20123313101149 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 (20123313101219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1437379507223 + ... + 1437379507236.

It is an arithmetic number, because the mean of its divisors is an integer number (5749518028920).

Almost surely, 2^{20123313101213} is an apocalyptic number.

It is an amenable number.

20123313101213 is a deficient number, since it is larger than the sum of its proper divisors (2874759014467).

20123313101213 is an equidigital number, since it uses as much as digits as its factorization.

20123313101213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2874759014466.

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

Adding to 20123313101213 its reverse (31210131332102), we get a palindrome (51333444433315).

The spelling of 20123313101213 in words is "twenty trillion, one hundred twenty-three billion, three hundred thirteen million, one hundred one thousand, two hundred thirteen".