20311333313323 has 4 divisors (see below), whose sum is σ = 21873743568208. Its totient is φ = 18748923058440.

The previous prime is 20311333313311. The next prime is 20311333313339. The reversal of 20311333313323 is 32331333311302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20311333313323 - 2¹⁷ = 20311333182251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20311333313923) 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, 781205127423 + ... + 781205127448.

It is an arithmetic number, because the mean of its divisors is an integer number (5468435892052).

Almost surely, 2^{20311333313323} is an apocalyptic number.

20311333313323 is a deficient number, since it is larger than the sum of its proper divisors (1562410254885).

20311333313323 is a wasteful number, since it uses less digits than its factorization.

20311333313323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1562410254884.

The product of its (nonzero) digits is 26244, while the sum is 31.

Adding to 20311333313323 its reverse (32331333311302), we get a palindrome (52642666624625).

The spelling of 20311333313323 in words is "twenty trillion, three hundred eleven billion, three hundred thirty-three million, three hundred thirteen thousand, three hundred twenty-three".