320252513 has 4 divisors (see below), whose sum is σ = 366002880. Its totient is φ = 274502148.

The previous prime is 320252507. The next prime is 320252549. The reversal of 320252513 is 315252023.

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 320252513 - 2⁴ = 320252497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320212513) 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, 22875173 + ... + 22875186.

It is an arithmetic number, because the mean of its divisors is an integer number (91500720).

Almost surely, 2^320252513 is an apocalyptic number.

It is an amenable number.

320252513 is a deficient number, since it is larger than the sum of its proper divisors (45750367).

320252513 is an equidigital number, since it uses as much as digits as its factorization.

320252513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45750366.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 320252513 is about 17895.6003810993. The cubic root of 320252513 is about 684.1702443499.

The spelling of 320252513 in words is "three hundred twenty million, two hundred fifty-two thousand, five hundred thirteen".