20433303331 has 16 divisors (see below), whose sum is σ = 23479397568. Its totient is φ = 17419161600.

The previous prime is 20433303329. The next prime is 20433303347. The reversal of 20433303331 is 13330333402.

It is a cyclic number.

It is not a de Polignac number, because 20433303331 - 2¹ = 20433303329 is a prime.

It is a super-2 number, since 2×20433303331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20433303296 and 20433303305.

It is not an unprimeable number, because it can be changed into a prime (20433303301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1377651 + ... + 1392403.

It is an arithmetic number, because the mean of its divisors is an integer number (1467462348).

Almost surely, 2^20433303331 is an apocalyptic number.

20433303331 is a deficient number, since it is larger than the sum of its proper divisors (3046094237).

20433303331 is a wasteful number, since it uses less digits than its factorization.

20433303331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15822.

The product of its (nonzero) digits is 5832, while the sum is 25.

Adding to 20433303331 its reverse (13330333402), we get a palindrome (33763636733).

The spelling of 20433303331 in words is "twenty billion, four hundred thirty-three million, three hundred three thousand, three hundred thirty-one".