213312865 has 8 divisors (see below), whose sum is σ = 256415040. Its totient is φ = 170357232.

The previous prime is 213312851. The next prime is 213312871. The reversal of 213312865 is 568213312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 213312865 - 2¹¹ = 213310817 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33405 + ... + 39274.

It is an arithmetic number, because the mean of its divisors is an integer number (32051880).

Almost surely, 2^213312865 is an apocalyptic number.

It is an amenable number.

213312865 is a deficient number, since it is larger than the sum of its proper divisors (43102175).

213312865 is an equidigital number, since it uses as much as digits as its factorization.

213312865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73271.

The product of its digits is 8640, while the sum is 31.

The square root of 213312865 is about 14605.2341645042. The cubic root of 213312865 is about 597.5015224951.

The spelling of 213312865 in words is "two hundred thirteen million, three hundred twelve thousand, eight hundred sixty-five".