20413117213 has 2 divisors, whose sum is σ = 20413117214. Its totient is φ = 20413117212.

The previous prime is 20413117199. The next prime is 20413117223. The reversal of 20413117213 is 31271131402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15805015524 + 4608101689 = 125718^2 + 67883^2 .

It is a cyclic number.

It is not a de Polignac number, because 20413117213 - 2¹⁷ = 20412986141 is a prime.

It is a super-3 number, since 3×20413117213³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20413117223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10206558606 + 10206558607.

It is an arithmetic number, because the mean of its divisors is an integer number (10206558607).

Almost surely, 2^20413117213 is an apocalyptic number.

It is an amenable number.

20413117213 is a deficient number, since it is larger than the sum of its proper divisors (1).

20413117213 is an equidigital number, since it uses as much as digits as its factorization.

20413117213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 25.

Adding to 20413117213 its reverse (31271131402), we get a palindrome (51684248615).

The spelling of 20413117213 in words is "twenty billion, four hundred thirteen million, one hundred seventeen thousand, two hundred thirteen".