213201297 has 6 divisors (see below), whose sum is σ = 307957442. Its totient is φ = 142134192.

The previous prime is 213201293. The next prime is 213201341. The reversal of 213201297 is 792102312.

It can be written as a sum of positive squares in only one way, i.e., 171714816 + 41486481 = 13104^2 + 6441^2 .

It is not a de Polignac number, because 213201297 - 2² = 213201293 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 213201297.

It is not an unprimeable number, because it can be changed into a prime (213201293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11844508 + ... + 11844525.

Almost surely, 2^213201297 is an apocalyptic number.

It is an amenable number.

213201297 is a deficient number, since it is larger than the sum of its proper divisors (94756145).

213201297 is a wasteful number, since it uses less digits than its factorization.

213201297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23689039 (or 23689036 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 213201297 is about 14601.4142123289. The cubic root of 213201297 is about 597.3973348813.

The spelling of 213201297 in words is "two hundred thirteen million, two hundred one thousand, two hundred ninety-seven".