16530313 has 4 divisors (see below), whose sum is σ = 16589008. Its totient is φ = 16471620.

The previous prime is 16530301. The next prime is 16530317. The reversal of 16530313 is 31303561.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31303561 = 2141 ⋅14621.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16530313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16530317) 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, 28923 + ... + 29488.

It is an arithmetic number, because the mean of its divisors is an integer number (4147252).

Almost surely, 2^16530313 is an apocalyptic number.

It is an amenable number.

16530313 is a deficient number, since it is larger than the sum of its proper divisors (58695).

16530313 is an equidigital number, since it uses as much as digits as its factorization.

16530313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58694.

The product of its (nonzero) digits is 810, while the sum is 22.

The square root of 16530313 is about 4065.7487625283. The cubic root of 16530313 is about 254.7379751139.

Adding to 16530313 its reverse (31303561), we get a palindrome (47833874).

The spelling of 16530313 in words is "sixteen million, five hundred thirty thousand, three hundred thirteen".