16081313 has 4 divisors (see below), whose sum is σ = 16384788. Its totient is φ = 15777840.

The previous prime is 16081291. The next prime is 16081363. The reversal of 16081313 is 31318061.

16081313 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 3810304 + 12271009 = 1952^2 + 3503^2 .

It is a cyclic number.

It is not a de Polignac number, because 16081313 - 2¹⁶ = 16015777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16081363) 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, 151658 + ... + 151763.

It is an arithmetic number, because the mean of its divisors is an integer number (4096197).

Almost surely, 2^16081313 is an apocalyptic number.

It is an amenable number.

16081313 is a deficient number, since it is larger than the sum of its proper divisors (303475).

16081313 is an equidigital number, since it uses as much as digits as its factorization.

16081313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303474.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 16081313 is about 4010.1512440306. The cubic root of 16081313 is about 252.4103553943.

Adding to 16081313 its reverse (31318061), we get a palindrome (47399374).

The spelling of 16081313 in words is "sixteen million, eighty-one thousand, three hundred thirteen".