213049279 has 2 divisors, whose sum is σ = 213049280. Its totient is φ = 213049278.

The previous prime is 213049273. The next prime is 213049301. The reversal of 213049279 is 972940312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213049279 - 2¹¹ = 213047231 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213049273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106524639 + 106524640.

It is an arithmetic number, because the mean of its divisors is an integer number (106524640).

Almost surely, 2^213049279 is an apocalyptic number.

213049279 is a deficient number, since it is larger than the sum of its proper divisors (1).

213049279 is an equidigital number, since it uses as much as digits as its factorization.

213049279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 213049279 is about 14596.2076924111. The cubic root of 213049279 is about 597.2553145741.

The spelling of 213049279 in words is "two hundred thirteen million, forty-nine thousand, two hundred seventy-nine".