213456413 has 2 divisors, whose sum is σ = 213456414. Its totient is φ = 213456412.

The previous prime is 213456401. The next prime is 213456433. The reversal of 213456413 is 314654312.

213456413 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., 152819044 + 60637369 = 12362^2 + 7787^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213456413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213456433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106728206 + 106728207.

It is an arithmetic number, because the mean of its divisors is an integer number (106728207).

Almost surely, 2^213456413 is an apocalyptic number.

It is an amenable number.

213456413 is a deficient number, since it is larger than the sum of its proper divisors (1).

213456413 is an equidigital number, since it uses as much as digits as its factorization.

213456413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 29.

The square root of 213456413 is about 14610.1476036349. The cubic root of 213456413 is about 597.6355211582.

The spelling of 213456413 in words is "two hundred thirteen million, four hundred fifty-six thousand, four hundred thirteen".