13431775 has 12 divisors (see below), whose sum is σ = 19034992. Its totient is φ = 9210240.

The previous prime is 13431767. The next prime is 13431787. The reversal of 13431775 is 57713431.

It is not a de Polignac number, because 13431775 - 2³ = 13431767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38202 + ... + 38551.

Almost surely, 2^13431775 is an apocalyptic number.

13431775 is a deficient number, since it is larger than the sum of its proper divisors (5603217).

13431775 is an equidigital number, since it uses as much as digits as its factorization.

13431775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76770 (or 76765 counting only the distinct ones).

The product of its digits is 8820, while the sum is 31.

The square root of 13431775 is about 3664.9386079442. The cubic root of 13431775 is about 237.7083674613.

The spelling of 13431775 in words is "thirteen million, four hundred thirty-one thousand, seven hundred seventy-five".