20344000231 has 2 divisors, whose sum is σ = 20344000232. Its totient is φ = 20344000230.

The previous prime is 20344000223. The next prime is 20344000247. The reversal of 20344000231 is 13200044302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20344000231 - 2³ = 20344000223 is a prime.

It is a super-2 number, since 2×20344000231² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20344000199 and 20344000208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20344000211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10172000115 + 10172000116.

It is an arithmetic number, because the mean of its divisors is an integer number (10172000116).

Almost surely, 2^20344000231 is an apocalyptic number.

20344000231 is a deficient number, since it is larger than the sum of its proper divisors (1).

20344000231 is an equidigital number, since it uses as much as digits as its factorization.

20344000231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 20344000231 its reverse (13200044302), we get a palindrome (33544044533).

The spelling of 20344000231 in words is "twenty billion, three hundred forty-four million, two hundred thirty-one", and thus it is an aban number.