213270917 has 8 divisors (see below), whose sum is σ = 220412160. Its totient is φ = 206146080.

The previous prime is 213270859. The next prime is 213270919. The reversal of 213270917 is 719072312.

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 213270917 - 2¹⁴ = 213254533 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 (213270919) 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, 25934 + ... + 33152.

It is an arithmetic number, because the mean of its divisors is an integer number (27551520).

Almost surely, 2^213270917 is an apocalyptic number.

It is an amenable number.

213270917 is a deficient number, since it is larger than the sum of its proper divisors (7141243).

213270917 is an equidigital number, since it uses as much as digits as its factorization.

213270917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8203.

The product of its (nonzero) digits is 5292, while the sum is 32.

The square root of 213270917 is about 14603.7980333884. The cubic root of 213270917 is about 597.4623536793.

The spelling of 213270917 in words is "two hundred thirteen million, two hundred seventy thousand, nine hundred seventeen".