20431401241 has 2 divisors, whose sum is σ = 20431401242. Its totient is φ = 20431401240.

The previous prime is 20431401223. The next prime is 20431401269. The reversal of 20431401241 is 14210413402.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11972736400 + 8458664841 = 109420^2 + 91971^2 .

It is a cyclic number.

It is not a de Polignac number, because 20431401241 - 2⁵ = 20431401209 is a prime.

It is not a weakly prime, because it can be changed into another prime (20431401041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10215700620 + 10215700621.

It is an arithmetic number, because the mean of its divisors is an integer number (10215700621).

Almost surely, 2^20431401241 is an apocalyptic number.

It is an amenable number.

20431401241 is a deficient number, since it is larger than the sum of its proper divisors (1).

20431401241 is an equidigital number, since it uses as much as digits as its factorization.

20431401241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 20431401241 its reverse (14210413402), we get a palindrome (34641814643).

The spelling of 20431401241 in words is "twenty billion, four hundred thirty-one million, four hundred one thousand, two hundred forty-one".