16313209 has 4 divisors (see below), whose sum is σ = 17796240. Its totient is φ = 14830180.

The previous prime is 16313207. The next prime is 16313221. The reversal of 16313209 is 90231361.

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.

It is a cyclic number.

It is not a de Polignac number, because 16313209 - 2¹ = 16313207 is a prime.

It is a super-2 number, since 2×16313209² = 532241575755362, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16313207) 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, 741499 + ... + 741520.

It is an arithmetic number, because the mean of its divisors is an integer number (4449060).

Almost surely, 2^16313209 is an apocalyptic number.

It is an amenable number.

16313209 is a deficient number, since it is larger than the sum of its proper divisors (1483031).

16313209 is a wasteful number, since it uses less digits than its factorization.

16313209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1483030.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 16313209 is about 4038.9613763937. The cubic root of 16313209 is about 253.6178403744.

The spelling of 16313209 in words is "sixteen million, three hundred thirteen thousand, two hundred nine".