13481437 has 4 divisors (see below), whose sum is σ = 13531456. Its totient is φ = 13431420.

The previous prime is 13481417. The next prime is 13481443. The reversal of 13481437 is 73418431.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13481437 - 2⁷ = 13481309 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13481399 and 13481408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13481407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24603 + ... + 25144.

It is an arithmetic number, because the mean of its divisors is an integer number (3382864).

Almost surely, 2^13481437 is an apocalyptic number.

It is an amenable number.

13481437 is a deficient number, since it is larger than the sum of its proper divisors (50019).

13481437 is an equidigital number, since it uses as much as digits as its factorization.

13481437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50018.

The product of its digits is 8064, while the sum is 31.

The square root of 13481437 is about 3671.7076408668. The cubic root of 13481437 is about 238.0009709727. Note that the first 3 decimals are identical.

Adding to 13481437 its reverse (73418431), we get a palindrome (86899868).

The spelling of 13481437 in words is "thirteen million, four hundred eighty-one thousand, four hundred thirty-seven".