213970241 has 2 divisors, whose sum is σ = 213970242. Its totient is φ = 213970240.

The previous prime is 213970231. The next prime is 213970271. The reversal of 213970241 is 142079312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 204490000 + 9480241 = 14300^2 + 3079^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213970241 is a prime.

It is not a weakly prime, because it can be changed into another prime (213970201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106985120 + 106985121.

It is an arithmetic number, because the mean of its divisors is an integer number (106985121).

Almost surely, 2^213970241 is an apocalyptic number.

It is an amenable number.

213970241 is a deficient number, since it is larger than the sum of its proper divisors (1).

213970241 is an equidigital number, since it uses as much as digits as its factorization.

213970241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 213970241 is about 14627.7216612841. The cubic root of 213970241 is about 598.1146756435.

The spelling of 213970241 in words is "two hundred thirteen million, nine hundred seventy thousand, two hundred forty-one".