320012517 has 16 divisors (see below), whose sum is σ = 467688960. Its totient is φ = 193023600.

The previous prime is 320012491. The next prime is 320012531. The reversal of 320012517 is 715210023.

It is not a de Polignac number, because 320012517 - 2⁶ = 320012453 is a prime.

It is a super-2 number, since 2×320012517² = 204816022073350578, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 320012493 and 320012502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320012587) 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 15 ways as a sum of consecutive naturals, for example, 16017 + ... + 29942.

It is an arithmetic number, because the mean of its divisors is an integer number (29230560).

Almost surely, 2^320012517 is an apocalyptic number.

It is an amenable number.

320012517 is a deficient number, since it is larger than the sum of its proper divisors (147676443).

320012517 is a wasteful number, since it uses less digits than its factorization.

320012517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46184.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 320012517 is about 17888.8936773631. The cubic root of 320012517 is about 683.9992967915. Note that the first 3 decimals are identical.

The spelling of 320012517 in words is "three hundred twenty million, twelve thousand, five hundred seventeen".