13670531 has 4 divisors (see below), whose sum is σ = 15623472. Its totient is φ = 11717592.

The previous prime is 13670521. The next prime is 13670539. The reversal of 13670531 is 13507631.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13670531 - 2¹⁰ = 13669507 is a prime.

It is a super-2 number, since 2×13670531² = 373766835643922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13670531.

It is not an unprimeable number, because it can be changed into a prime (13670539) 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, 976460 + ... + 976473.

It is an arithmetic number, because the mean of its divisors is an integer number (3905868).

Almost surely, 2^13670531 is an apocalyptic number.

13670531 is a deficient number, since it is larger than the sum of its proper divisors (1952941).

13670531 is an equidigital number, since it uses as much as digits as its factorization.

13670531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1952940.

The product of its (nonzero) digits is 1890, while the sum is 26.

The square root of 13670531 is about 3697.3681179996. The cubic root of 13670531 is about 239.1085622237.

The spelling of 13670531 in words is "thirteen million, six hundred seventy thousand, five hundred thirty-one".