20413430371 has 2 divisors, whose sum is σ = 20413430372. Its totient is φ = 20413430370.

The previous prime is 20413430309. The next prime is 20413430381. The reversal of 20413430371 is 17303431402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20413430371 - 2⁹ = 20413429859 is a prime.

It is not a weakly prime, because it can be changed into another prime (20413430381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10206715185 + 10206715186.

It is an arithmetic number, because the mean of its divisors is an integer number (10206715186).

Almost surely, 2^20413430371 is an apocalyptic number.

20413430371 is a deficient number, since it is larger than the sum of its proper divisors (1).

20413430371 is an equidigital number, since it uses as much as digits as its factorization.

20413430371 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 28.

Adding to 20413430371 its reverse (17303431402), we get a palindrome (37716861773).

The spelling of 20413430371 in words is "twenty billion, four hundred thirteen million, four hundred thirty thousand, three hundred seventy-one".