20313321233 has 16 divisors (see below), whose sum is σ = 22041302400. Its totient is φ = 18650117376.

The previous prime is 20313321227. The next prime is 20313321239. The reversal of 20313321233 is 33212331302.

It is an interprime number because it is at equal distance from previous prime (20313321227) and next prime (20313321239).

It is not a de Polignac number, because 20313321233 - 2⁶ = 20313321169 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20313321199 and 20313321208.

It is not an unprimeable number, because it can be changed into a prime (20313321239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30743 + ... + 203891.

It is an arithmetic number, because the mean of its divisors is an integer number (1377581400).

Almost surely, 2^20313321233 is an apocalyptic number.

It is an amenable number.

20313321233 is a deficient number, since it is larger than the sum of its proper divisors (1727981167).

20313321233 is a wasteful number, since it uses less digits than its factorization.

20313321233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173336.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 20313321233 its reverse (33212331302), we get a palindrome (53525652535).

The spelling of 20313321233 in words is "twenty billion, three hundred thirteen million, three hundred twenty-one thousand, two hundred thirty-three".