20320323201213 has 32 divisors (see below), whose sum is σ = 31056142694400. Its totient is φ = 11577205523520.

The previous prime is 20320323201197. The next prime is 20320323201251. The reversal of 20320323201213 is 31210232302302.

It is not a de Polignac number, because 20320323201213 - 2⁴ = 20320323201197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20320323201413) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14344456 + ... + 15697262.

It is an arithmetic number, because the mean of its divisors is an integer number (970504459200).

Almost surely, 2^{20320323201213} is an apocalyptic number.

It is an amenable number.

20320323201213 is a deficient number, since it is larger than the sum of its proper divisors (10735819493187).

20320323201213 is a wasteful number, since it uses less digits than its factorization.

20320323201213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1354937.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 20320323201213 its reverse (31210232302302), we get a palindrome (51530555503515).

The spelling of 20320323201213 in words is "twenty trillion, three hundred twenty billion, three hundred twenty-three million, two hundred one thousand, two hundred thirteen".