17212313 has 4 divisors (see below), whose sum is σ = 18224820. Its totient is φ = 16199808.

The previous prime is 17212301. The next prime is 17212337. The reversal of 17212313 is 31321271.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31321271 = 59 ⋅530869.

It can be written as a sum of positive squares in 2 ways, for example, as 4631104 + 12581209 = 2152^2 + 3547^2 .

It is a cyclic number.

It is not a de Polignac number, because 17212313 - 2⁴ = 17212297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (17212373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 506228 + ... + 506261.

It is an arithmetic number, because the mean of its divisors is an integer number (4556205).

Almost surely, 2^17212313 is an apocalyptic number.

It is an amenable number.

17212313 is a deficient number, since it is larger than the sum of its proper divisors (1012507).

17212313 is a wasteful number, since it uses less digits than its factorization.

17212313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1012506.

The product of its digits is 252, while the sum is 20.

The square root of 17212313 is about 4148.7724690564. The cubic root of 17212313 is about 258.1941580781.

Adding to 17212313 its reverse (31321271), we get a palindrome (48533584).

The spelling of 17212313 in words is "seventeen million, two hundred twelve thousand, three hundred thirteen".