213406315 has 4 divisors (see below), whose sum is σ = 256087584. Its totient is φ = 170725048.

The previous prime is 213406313. The next prime is 213406339. The reversal of 213406315 is 513604312.

213406315 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 213406315 - 2¹ = 213406313 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 213406315.

It is not an unprimeable number, because it can be changed into a prime (213406313) 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, 21340627 + ... + 21340636.

It is an arithmetic number, because the mean of its divisors is an integer number (64021896).

Almost surely, 2^213406315 is an apocalyptic number.

213406315 is a deficient number, since it is larger than the sum of its proper divisors (42681269).

213406315 is an equidigital number, since it uses as much as digits as its factorization.

213406315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42681268.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 213406315 is about 14608.4330097379. The cubic root of 213406315 is about 597.5887626865.

The spelling of 213406315 in words is "two hundred thirteen million, four hundred six thousand, three hundred fifteen".