513320911 has 4 divisors (see below), whose sum is σ = 513401272. Its totient is φ = 513240552.

The previous prime is 513320903. The next prime is 513320947. The reversal of 513320911 is 119023315.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 513320911 - 2³ = 513320903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513320011) 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, 29685 + ... + 43678.

It is an arithmetic number, because the mean of its divisors is an integer number (128350318).

Almost surely, 2^513320911 is an apocalyptic number.

513320911 is a deficient number, since it is larger than the sum of its proper divisors (80361).

513320911 is an equidigital number, since it uses as much as digits as its factorization.

513320911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80360.

The product of its (nonzero) digits is 810, while the sum is 25.

The square root of 513320911 is about 22656.5864816393. The cubic root of 513320911 is about 800.6873836896.

The spelling of 513320911 in words is "five hundred thirteen million, three hundred twenty thousand, nine hundred eleven".