213743297 has 2 divisors, whose sum is σ = 213743298. Its totient is φ = 213743296.

The previous prime is 213743281. The next prime is 213743323. The reversal of 213743297 is 792347312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 199120321 + 14622976 = 14111^2 + 3824^2 .

It is a cyclic number.

It is not a de Polignac number, because 213743297 - 2⁴ = 213743281 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 213743297.

It is not a weakly prime, because it can be changed into another prime (213743237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106871648 + 106871649.

It is an arithmetic number, because the mean of its divisors is an integer number (106871649).

Almost surely, 2^213743297 is an apocalyptic number.

It is an amenable number.

213743297 is a deficient number, since it is larger than the sum of its proper divisors (1).

213743297 is an equidigital number, since it uses as much as digits as its factorization.

213743297 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63504, while the sum is 38.

The square root of 213743297 is about 14619.9622776531. The cubic root of 213743297 is about 597.9031406902.

The spelling of 213743297 in words is "two hundred thirteen million, seven hundred forty-three thousand, two hundred ninety-seven".