20320023122313 has 16 divisors (see below), whose sum is σ = 27316964057856. Its totient is φ = 13435009258320.

The previous prime is 20320023122299. The next prime is 20320023122461. The reversal of 20320023122313 is 31322132002302.

It is not a de Polignac number, because 20320023122313 - 2⁸ = 20320023122057 is a prime.

It is a super-2 number, since 2×20320023122313² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20320023122513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15250231 + ... + 16529052.

It is an arithmetic number, because the mean of its divisors is an integer number (1707310253616).

Almost surely, 2^{20320023122313} is an apocalyptic number.

It is an amenable number.

20320023122313 is a deficient number, since it is larger than the sum of its proper divisors (6996940935543).

20320023122313 is a wasteful number, since it uses less digits than its factorization.

20320023122313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31781044.

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

Adding to 20320023122313 its reverse (31322132002302), we get a palindrome (51642155124615).

The spelling of 20320023122313 in words is "twenty trillion, three hundred twenty billion, twenty-three million, one hundred twenty-two thousand, three hundred thirteen".