20431313411 has 2 divisors, whose sum is σ = 20431313412. Its totient is φ = 20431313410.

The previous prime is 20431313401. The next prime is 20431313417. The reversal of 20431313411 is 11431313402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20431313411 - 2³⁰ = 19357571587 is a prime.

It is not a weakly prime, because it can be changed into another prime (20431313417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10215656705 + 10215656706.

It is an arithmetic number, because the mean of its divisors is an integer number (10215656706).

Almost surely, 2^20431313411 is an apocalyptic number.

20431313411 is a deficient number, since it is larger than the sum of its proper divisors (1).

20431313411 is an equidigital number, since it uses as much as digits as its factorization.

20431313411 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 20431313411 its reverse (11431313402), we get a palindrome (31862626813).

Subtracting from 20431313411 its reverse (11431313402), we obtain a palindrome (9000000009).

The spelling of 20431313411 in words is "twenty billion, four hundred thirty-one million, three hundred thirteen thousand, four hundred eleven".