20311333211323 has 64 divisors (see below), whose sum is σ = 25933546414080. Its totient is φ = 15450120576000.

The previous prime is 20311333211171. The next prime is 20311333211381. The reversal of 20311333211323 is 32311233311302.

It is a happy number.

It is not a de Polignac number, because 20311333211323 - 2¹³ = 20311333203131 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20311333211291 and 20311333211300.

It is not an unprimeable number, because it can be changed into a prime (20311333211023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2342980233 + ... + 2342988901.

It is an arithmetic number, because the mean of its divisors is an integer number (405211662720).

Almost surely, 2^{20311333211323} is an apocalyptic number.

20311333211323 is a deficient number, since it is larger than the sum of its proper divisors (5622213202757).

20311333211323 is a wasteful number, since it uses less digits than its factorization.

20311333211323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12988.

The product of its (nonzero) digits is 5832, while the sum is 28.

Adding to 20311333211323 its reverse (32311233311302), we get a palindrome (52622566522625).

The spelling of 20311333211323 in words is "twenty trillion, three hundred eleven billion, three hundred thirty-three million, two hundred eleven thousand, three hundred twenty-three".