20343442001 has 2 divisors, whose sum is σ = 20343442002. Its totient is φ = 20343442000.

The previous prime is 20343441997. The next prime is 20343442027. The reversal of 20343442001 is 10024434302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20007819601 + 335622400 = 141449^2 + 18320^2 .

It is a cyclic number.

It is not a de Polignac number, because 20343442001 - 2² = 20343441997 is a prime.

It is not a weakly prime, because it can be changed into another prime (20343448001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10171721000 + 10171721001.

It is an arithmetic number, because the mean of its divisors is an integer number (10171721001).

Almost surely, 2^20343442001 is an apocalyptic number.

It is an amenable number.

20343442001 is a deficient number, since it is larger than the sum of its proper divisors (1).

20343442001 is an equidigital number, since it uses as much as digits as its factorization.

20343442001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 20343442001 its reverse (10024434302), we get a palindrome (30367876303).

The spelling of 20343442001 in words is "twenty billion, three hundred forty-three million, four hundred forty-two thousand, one".