636414131 has 2 divisors, whose sum is σ = 636414132. Its totient is φ = 636414130.

The previous prime is 636414127. The next prime is 636414133. The reversal of 636414131 is 131414636.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 636414131 - 2² = 636414127 is a prime.

It is a super-3 number, since 3×636414131³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 636414133, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 636414094 and 636414103.

It is not a weakly prime, because it can be changed into another prime (636414133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 318207065 + 318207066.

It is an arithmetic number, because the mean of its divisors is an integer number (318207066).

Almost surely, 2^636414131 is an apocalyptic number.

636414131 is a deficient number, since it is larger than the sum of its proper divisors (1).

636414131 is an equidigital number, since it uses as much as digits as its factorization.

636414131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 29.

The square root of 636414131 is about 25227.2497708331. The cubic root of 636414131 is about 860.1613772336.

Adding to 636414131 its reverse (131414636), we get a palindrome (767828767).

The spelling of 636414131 in words is "six hundred thirty-six million, four hundred fourteen thousand, one hundred thirty-one".