20341322431 has 4 divisors (see below), whose sum is σ = 20416941000. Its totient is φ = 20265703864.

The previous prime is 20341322381. The next prime is 20341322437. The reversal of 20341322431 is 13422314302.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13422314302 = 2 ⋅6711157151.

It is a cyclic number.

It is not a de Polignac number, because 20341322431 - 2⁹ = 20341321919 is a prime.

It is a super-2 number, since 2×20341322431² (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 = 20341322396 and 20341322405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20341322437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37808881 + ... + 37809418.

It is an arithmetic number, because the mean of its divisors is an integer number (5104235250).

Almost surely, 2^20341322431 is an apocalyptic number.

20341322431 is a deficient number, since it is larger than the sum of its proper divisors (75618569).

20341322431 is an equidigital number, since it uses as much as digits as its factorization.

20341322431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75618568.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 20341322431 its reverse (13422314302), we get a palindrome (33763636733).

The spelling of 20341322431 in words is "twenty billion, three hundred forty-one million, three hundred twenty-two thousand, four hundred thirty-one".