13279313 has 4 divisors (see below), whose sum is σ = 13295268. Its totient is φ = 13263360.

The previous prime is 13279297. The next prime is 13279351. The reversal of 13279313 is 31397231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31397231 = 23 ⋅1365097.

It can be written as a sum of positive squares in 2 ways, for example, as 4231249 + 9048064 = 2057^2 + 3008^2 .

It is a cyclic number.

It is not a de Polignac number, because 13279313 - 2⁴ = 13279297 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13279373) 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, 6656 + ... + 8417.

It is an arithmetic number, because the mean of its divisors is an integer number (3323817).

Almost surely, 2^13279313 is an apocalyptic number.

It is an amenable number.

13279313 is a deficient number, since it is larger than the sum of its proper divisors (15955).

13279313 is an equidigital number, since it uses as much as digits as its factorization.

13279313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15954.

The product of its digits is 3402, while the sum is 29.

The square root of 13279313 is about 3644.0791703804. The cubic root of 13279313 is about 236.8055458986.

The spelling of 13279313 in words is "thirteen million, two hundred seventy-nine thousand, three hundred thirteen".