15996313 has 4 divisors (see below), whose sum is σ = 16547940. Its totient is φ = 15444688.

The previous prime is 15996311. The next prime is 15996329. The reversal of 15996313 is 31369951.

15996313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 12581209 + 3415104 = 3547^2 + 1848^2 .

It is a cyclic number.

It is not a de Polignac number, because 15996313 - 2¹ = 15996311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15996311) 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, 275770 + ... + 275827.

It is an arithmetic number, because the mean of its divisors is an integer number (4136985).

Almost surely, 2^15996313 is an apocalyptic number.

It is an amenable number.

15996313 is a deficient number, since it is larger than the sum of its proper divisors (551627).

15996313 is an equidigital number, since it uses as much as digits as its factorization.

15996313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551626.

The product of its digits is 21870, while the sum is 37.

The square root of 15996313 is about 3999.5390984462. The cubic root of 15996313 is about 251.9648529549.

The spelling of 15996313 in words is "fifteen million, nine hundred ninety-six thousand, three hundred thirteen".