216136347 has 16 divisors (see below), whose sum is σ = 331948032. Its totient is φ = 122532480.

The previous prime is 216136331. The next prime is 216136363. The reversal of 216136347 is 743631612.

It is an interprime number because it is at equal distance from previous prime (216136331) and next prime (216136363).

It is not a de Polignac number, because 216136347 - 2⁴ = 216136331 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216136367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37854 + ... + 43187.

It is an arithmetic number, because the mean of its divisors is an integer number (20746752).

Almost surely, 2^216136347 is an apocalyptic number.

216136347 is a deficient number, since it is larger than the sum of its proper divisors (115811685).

216136347 is a wasteful number, since it uses less digits than its factorization.

216136347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81178.

The product of its digits is 18144, while the sum is 33.

The square root of 216136347 is about 14701.5763440524. The cubic root of 216136347 is about 600.1262206676.

Adding to 216136347 its reverse (743631612), we get a palindrome (959767959).

The spelling of 216136347 in words is "two hundred sixteen million, one hundred thirty-six thousand, three hundred forty-seven".