213704471 has 2 divisors, whose sum is σ = 213704472. Its totient is φ = 213704470.

The previous prime is 213704437. The next prime is 213704497. The reversal of 213704471 is 174407312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213704471 - 2¹⁴ = 213688087 is a prime.

It is a super-3 number, since 3×213704471³ (a number of 26 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213704171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106852235 + 106852236.

It is an arithmetic number, because the mean of its divisors is an integer number (106852236).

Almost surely, 2^213704471 is an apocalyptic number.

213704471 is a deficient number, since it is larger than the sum of its proper divisors (1).

213704471 is an equidigital number, since it uses as much as digits as its factorization.

213704471 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 213704471 is about 14618.6343753444. The cubic root of 213704471 is about 597.8669359009.

The spelling of 213704471 in words is "two hundred thirteen million, seven hundred four thousand, four hundred seventy-one".