13122631 has 2 divisors, whose sum is σ = 13122632. Its totient is φ = 13122630.

The previous prime is 13122607. The next prime is 13122647. The reversal of 13122631 is 13622131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13122631 - 2⁹ = 13122119 is a prime.

It is a super-2 number, since 2×13122631² = 344406888724322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13122599 and 13122608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13122601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6561315 + 6561316.

It is an arithmetic number, because the mean of its divisors is an integer number (6561316).

Almost surely, 2^13122631 is an apocalyptic number.

13122631 is a deficient number, since it is larger than the sum of its proper divisors (1).

13122631 is an equidigital number, since it uses as much as digits as its factorization.

13122631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216, while the sum is 19.

The square root of 13122631 is about 3622.5172187306. The cubic root of 13122631 is about 235.8705061402.

Adding to 13122631 its reverse (13622131), we get a palindrome (26744762).

Subtracting 13122631 from its reverse (13622131), we obtain a triangular number (499500 = T₉₉₉).

The spelling of 13122631 in words is "thirteen million, one hundred twenty-two thousand, six hundred thirty-one".