213136215 has 8 divisors (see below), whose sum is σ = 341017968. Its totient is φ = 113672640.

The previous prime is 213136207. The next prime is 213136219. The reversal of 213136215 is 512631312.

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

It is not a de Polignac number, because 213136215 - 2³ = 213136207 is a prime.

It is a super-2 number, since 2×213136215² = 90854092289052450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213136219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7104526 + ... + 7104555.

It is an arithmetic number, because the mean of its divisors is an integer number (42627246).

Almost surely, 2^213136215 is an apocalyptic number.

213136215 is a deficient number, since it is larger than the sum of its proper divisors (127881753).

213136215 is a wasteful number, since it uses less digits than its factorization.

213136215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14209089.

The product of its digits is 1080, while the sum is 24.

The square root of 213136215 is about 14599.1854224816. The cubic root of 213136215 is about 597.3365413641.

Adding to 213136215 its reverse (512631312), we get a palindrome (725767527).

The spelling of 213136215 in words is "two hundred thirteen million, one hundred thirty-six thousand, two hundred fifteen".