14781313 has 4 divisors (see below), whose sum is σ = 15650820. Its totient is φ = 13911808.

The previous prime is 14781311. The next prime is 14781317. The reversal of 14781313 is 31318741.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31318741 = 113 ⋅277157.

It can be written as a sum of positive squares in 2 ways, for example, as 4592449 + 10188864 = 2143^2 + 3192^2 .

It is a cyclic number.

It is not a de Polignac number, because 14781313 - 2¹ = 14781311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14781311) 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, 434728 + ... + 434761.

It is an arithmetic number, because the mean of its divisors is an integer number (3912705).

Almost surely, 2^14781313 is an apocalyptic number.

It is an amenable number.

14781313 is a deficient number, since it is larger than the sum of its proper divisors (869507).

14781313 is an equidigital number, since it uses as much as digits as its factorization.

14781313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869506.

The product of its digits is 2016, while the sum is 28.

The square root of 14781313 is about 3844.6473180254. The cubic root of 14781313 is about 245.4168275709.

The spelling of 14781313 in words is "fourteen million, seven hundred eighty-one thousand, three hundred thirteen".