13431465 has 12 divisors (see below), whose sum is σ = 23281284. Its totient is φ = 7163424.

The previous prime is 13431433. The next prime is 13431497. The reversal of 13431465 is 56413431.

It is an interprime number because it is at equal distance from previous prime (13431433) and next prime (13431497).

It can be written as a sum of positive squares in 2 ways, for example, as 10361961 + 3069504 = 3219^2 + 1752^2 .

It is not a de Polignac number, because 13431465 - 2⁵ = 13431433 is a prime.

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 149194 + ... + 149283.

It is an arithmetic number, because the mean of its divisors is an integer number (1940107).

Almost surely, 2^13431465 is an apocalyptic number.

13431465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13431465 is a deficient number, since it is larger than the sum of its proper divisors (9849819).

13431465 is a wasteful number, since it uses less digits than its factorization.

13431465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298488 (or 298485 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 13431465 is about 3664.8963150408. The cubic root of 13431465 is about 237.7065387092.

Adding to 13431465 its reverse (56413431), we get a palindrome (69844896).

The spelling of 13431465 in words is "thirteen million, four hundred thirty-one thousand, four hundred sixty-five".