213697213 has 8 divisors (see below), whose sum is σ = 218242976. Its totient is φ = 209185200.

The previous prime is 213697193. The next prime is 213697217. The reversal of 213697213 is 312796312.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213697213 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 (213697217) 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, 4570 + ... + 21172.

It is an arithmetic number, because the mean of its divisors is an integer number (27280372).

Almost surely, 2^213697213 is an apocalyptic number.

It is an amenable number.

213697213 is a deficient number, since it is larger than the sum of its proper divisors (4545763).

213697213 is a wasteful number, since it uses less digits than its factorization.

213697213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16875.

The product of its digits is 13608, while the sum is 34.

The square root of 213697213 is about 14618.3861284343. The cubic root of 213697213 is about 597.8601674146.

Subtracting 213697213 from its reverse (312796312), we obtain a palindrome (99099099).

It can be divided in two parts, 21369 and 7213, that added together give a palindrome (28582).

The spelling of 213697213 in words is "two hundred thirteen million, six hundred ninety-seven thousand, two hundred thirteen".