320767513 has 4 divisors (see below), whose sum is σ = 349928208. Its totient is φ = 291606820.

The previous prime is 320767511. The next prime is 320767529. The reversal of 320767513 is 315767023.

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 320767513 - 2¹ = 320767511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320767511) 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, 14580331 + ... + 14580352.

It is an arithmetic number, because the mean of its divisors is an integer number (87482052).

Almost surely, 2^320767513 is an apocalyptic number.

It is an amenable number.

320767513 is a deficient number, since it is larger than the sum of its proper divisors (29160695).

320767513 is a wasteful number, since it uses less digits than its factorization.

320767513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29160694.

The product of its (nonzero) digits is 26460, while the sum is 34.

The square root of 320767513 is about 17909.9836124995. The cubic root of 320767513 is about 684.5367873738.

The spelling of 320767513 in words is "three hundred twenty million, seven hundred sixty-seven thousand, five hundred thirteen".