213934453 has 2 divisors, whose sum is σ = 213934454. Its totient is φ = 213934452.

The previous prime is 213934439. The next prime is 213934489. The reversal of 213934453 is 354439312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 178970884 + 34963569 = 13378^2 + 5913^2 .

It is a cyclic number.

It is not a de Polignac number, because 213934453 - 2²⁵ = 180380021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213934423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106967226 + 106967227.

It is an arithmetic number, because the mean of its divisors is an integer number (106967227).

Almost surely, 2^213934453 is an apocalyptic number.

It is an amenable number.

213934453 is a deficient number, since it is larger than the sum of its proper divisors (1).

213934453 is an equidigital number, since it uses as much as digits as its factorization.

213934453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 34.

The square root of 213934453 is about 14626.4983164119. The cubic root of 213934453 is about 598.0813275147.

The spelling of 213934453 in words is "two hundred thirteen million, nine hundred thirty-four thousand, four hundred fifty-three".