13946531 has 2 divisors, whose sum is σ = 13946532. Its totient is φ = 13946530.

The previous prime is 13946503. The next prime is 13946539. The reversal of 13946531 is 13564931.

It is a strong prime.

It is an emirp because it is prime and its reverse (13564931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13946531 - 2¹⁸ = 13684387 is a prime.

It is a super-2 number, since 2×13946531² = 389011453867922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13946539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6973265 + 6973266.

It is an arithmetic number, because the mean of its divisors is an integer number (6973266).

Almost surely, 2^13946531 is an apocalyptic number.

13946531 is a deficient number, since it is larger than the sum of its proper divisors (1).

13946531 is an equidigital number, since it uses as much as digits as its factorization.

13946531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9720, while the sum is 32.

The square root of 13946531 is about 3734.5054558803. The cubic root of 13946531 is about 240.7070066467.

The spelling of 13946531 in words is "thirteen million, nine hundred forty-six thousand, five hundred thirty-one".