20450104331 has 2 divisors, whose sum is σ = 20450104332. Its totient is φ = 20450104330.

The previous prime is 20450104309. The next prime is 20450104349. The reversal of 20450104331 is 13340105402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20450104331 - 2²² = 20445910027 is a prime.

It is a super-2 number, since 2×20450104331² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20450104297 and 20450104306.

It is not a weakly prime, because it can be changed into another prime (20450104391) 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 as a sum of consecutive naturals, namely, 10225052165 + 10225052166.

It is an arithmetic number, because the mean of its divisors is an integer number (10225052166).

Almost surely, 2^20450104331 is an apocalyptic number.

20450104331 is a deficient number, since it is larger than the sum of its proper divisors (1).

20450104331 is an equidigital number, since it uses as much as digits as its factorization.

20450104331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 20450104331 its reverse (13340105402), we get a palindrome (33790209733).

The spelling of 20450104331 in words is "twenty billion, four hundred fifty million, one hundred four thousand, three hundred thirty-one".