216200137 has 2 divisors, whose sum is σ = 216200138. Its totient is φ = 216200136.

The previous prime is 216200123. The next prime is 216200177. The reversal of 216200137 is 731002612.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 196672576 + 19527561 = 14024^2 + 4419^2 .

It is a cyclic number.

It is not a de Polignac number, because 216200137 - 2⁷ = 216200009 is a prime.

It is not a weakly prime, because it can be changed into another prime (216200177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108100068 + 108100069.

It is an arithmetic number, because the mean of its divisors is an integer number (108100069).

Almost surely, 2^216200137 is an apocalyptic number.

It is an amenable number.

216200137 is a deficient number, since it is larger than the sum of its proper divisors (1).

216200137 is an equidigital number, since it uses as much as digits as its factorization.

216200137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 216200137 is about 14703.7456792479. The cubic root of 216200137 is about 600.1852548322.

Adding to 216200137 its reverse (731002612), we get a palindrome (947202749).

The spelling of 216200137 in words is "two hundred sixteen million, two hundred thousand, one hundred thirty-seven".