13431336 has 16 divisors (see below), whose sum is σ = 33578400. Its totient is φ = 4477104.

The previous prime is 13431323. The next prime is 13431349. The reversal of 13431336 is 63313431.

It is an interprime number because it is at equal distance from previous prime (13431323) and next prime (13431349).

It is a super-3 number, since 3×13431336³ (a number of 22 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 559639 = 13431336 / (1 + 3 + 4 + 3 + 1 + 3 + 3 + 6).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 279796 + ... + 279843.

It is an arithmetic number, because the mean of its divisors is an integer number (2098650).

Almost surely, 2^13431336 is an apocalyptic number.

It is an amenable number.

13431336 is an abundant number, since it is smaller than the sum of its proper divisors (20147064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13431336 is a wasteful number, since it uses less digits than its factorization.

13431336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559648 (or 559644 counting only the distinct ones).

The product of its digits is 1944, while the sum is 24.

The square root of 13431336 is about 3664.8787155921. The cubic root of 13431336 is about 237.7057777040.

Adding to 13431336 its reverse (63313431), we get a palindrome (76744767).

The spelling of 13431336 in words is "thirteen million, four hundred thirty-one thousand, three hundred thirty-six".