213400361 has 2 divisors, whose sum is σ = 213400362. Its totient is φ = 213400360.

The previous prime is 213400331. The next prime is 213400403. The reversal of 213400361 is 163004312.

213400361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 204061225 + 9339136 = 14285^2 + 3056^2 .

It is a cyclic number.

It is not a de Polignac number, because 213400361 - 2¹⁰ = 213399337 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (213400301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106700180 + 106700181.

It is an arithmetic number, because the mean of its divisors is an integer number (106700181).

Almost surely, 2^213400361 is an apocalyptic number.

It is an amenable number.

213400361 is a deficient number, since it is larger than the sum of its proper divisors (1).

213400361 is an equidigital number, since it uses as much as digits as its factorization.

213400361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 213400361 is about 14608.2292219146. The cubic root of 213400361 is about 597.5832050931.

Adding to 213400361 its reverse (163004312), we get a palindrome (376404673).

The spelling of 213400361 in words is "two hundred thirteen million, four hundred thousand, three hundred sixty-one".