216334471 has 2 divisors, whose sum is σ = 216334472. Its totient is φ = 216334470.

The previous prime is 216334451. The next prime is 216334483. The reversal of 216334471 is 174433612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 216334471 - 2²⁷ = 82116743 is a prime.

It is a super-3 number, since 3×216334471³ (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 (216334451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108167235 + 108167236.

It is an arithmetic number, because the mean of its divisors is an integer number (108167236).

Almost surely, 2^216334471 is an apocalyptic number.

216334471 is a deficient number, since it is larger than the sum of its proper divisors (1).

216334471 is an equidigital number, since it uses as much as digits as its factorization.

216334471 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 31.

The square root of 216334471 is about 14708.3129895988. The cubic root of 216334471 is about 600.3095356557.

The spelling of 216334471 in words is "two hundred sixteen million, three hundred thirty-four thousand, four hundred seventy-one".