320012817 has 4 divisors (see below), whose sum is σ = 426683760. Its totient is φ = 213341876.

The previous prime is 320012807. The next prime is 320012821. The reversal of 320012817 is 718210023.

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: 718210023 = 3 ⋅239403341.

It is a cyclic number.

It is not a de Polignac number, because 320012817 - 2¹⁴ = 319996433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (320012807) 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, 53335467 + ... + 53335472.

It is an arithmetic number, because the mean of its divisors is an integer number (106670940).

Almost surely, 2^320012817 is an apocalyptic number.

It is an amenable number.

320012817 is a deficient number, since it is larger than the sum of its proper divisors (106670943).

320012817 is a wasteful number, since it uses less digits than its factorization.

320012817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106670942.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 320012817 is about 17888.9020624520. The cubic root of 320012817 is about 683.9995105328. Note that the first 3 decimals are identical.

The spelling of 320012817 in words is "three hundred twenty million, twelve thousand, eight hundred seventeen".