13216377 has 4 divisors (see below), whose sum is σ = 17621840. Its totient is φ = 8810916.

The previous prime is 13216369. The next prime is 13216387. The reversal of 13216377 is 77361231.

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 not a de Polignac number, because 13216377 - 2³ = 13216369 is a prime.

It is a super-2 number, since 2×13216377² = 349345242012258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13216337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2202727 + ... + 2202732.

It is an arithmetic number, because the mean of its divisors is an integer number (4405460).

Almost surely, 2^13216377 is an apocalyptic number.

It is an amenable number.

13216377 is a deficient number, since it is larger than the sum of its proper divisors (4405463).

13216377 is an equidigital number, since it uses as much as digits as its factorization.

13216377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4405462.

The product of its digits is 5292, while the sum is 30.

The square root of 13216377 is about 3635.4335367326. The cubic root of 13216377 is about 236.4308477815.

The spelling of 13216377 in words is "thirteen million, two hundred sixteen thousand, three hundred seventy-seven".