20413012231 has 2 divisors, whose sum is σ = 20413012232. Its totient is φ = 20413012230.

The previous prime is 20413012229. The next prime is 20413012237. The reversal of 20413012231 is 13221031402.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20413012231 - 2¹ = 20413012229 is a prime.

It is a super-2 number, since 2×20413012231² (a number of 21 digits) contains 22 as substring.

Together with 20413012229, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 20413012199 and 20413012208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20413012237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10206506115 + 10206506116.

It is an arithmetic number, because the mean of its divisors is an integer number (10206506116).

Almost surely, 2^20413012231 is an apocalyptic number.

20413012231 is a deficient number, since it is larger than the sum of its proper divisors (1).

20413012231 is an equidigital number, since it uses as much as digits as its factorization.

20413012231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 20413012231 its reverse (13221031402), we get a palindrome (33634043633).

The spelling of 20413012231 in words is "twenty billion, four hundred thirteen million, twelve thousand, two hundred thirty-one".