20022305531 has 2 divisors, whose sum is σ = 20022305532. Its totient is φ = 20022305530.

The previous prime is 20022305491. The next prime is 20022305533. The reversal of 20022305531 is 13550322002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20022305531 - 2³⁰ = 18948563707 is a prime.

It is a super-2 number, since 2×20022305531² (a number of 21 digits) contains 22 as substring.

Together with 20022305533, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 20022305497 and 20022305506.

It is not a weakly prime, because it can be changed into another prime (20022305533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10011152765 + 10011152766.

It is an arithmetic number, because the mean of its divisors is an integer number (10011152766).

Almost surely, 2^20022305531 is an apocalyptic number.

20022305531 is a deficient number, since it is larger than the sum of its proper divisors (1).

20022305531 is an equidigital number, since it uses as much as digits as its factorization.

20022305531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 23.

Adding to 20022305531 its reverse (13550322002), we get a palindrome (33572627533).

The spelling of 20022305531 in words is "twenty billion, twenty-two million, three hundred five thousand, five hundred thirty-one".