20433222031 has 2 divisors, whose sum is σ = 20433222032. Its totient is φ = 20433222030.

The previous prime is 20433221999. The next prime is 20433222037. The reversal of 20433222031 is 13022233402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20433222031 - 2⁵ = 20433221999 is a prime.

It is a super-2 number, since 2×20433222031² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20433221993 and 20433222011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20433222037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10216611015 + 10216611016.

It is an arithmetic number, because the mean of its divisors is an integer number (10216611016).

Almost surely, 2^20433222031 is an apocalyptic number.

20433222031 is a deficient number, since it is larger than the sum of its proper divisors (1).

20433222031 is an equidigital number, since it uses as much as digits as its factorization.

20433222031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 20433222031 its reverse (13022233402), we get a palindrome (33455455433).

The spelling of 20433222031 in words is "twenty billion, four hundred thirty-three million, two hundred twenty-two thousand, thirty-one".