216103238387 has 2 divisors, whose sum is σ = 216103238388. Its totient is φ = 216103238386.

The previous prime is 216103238363. The next prime is 216103238411. The reversal of 216103238387 is 783832301612.

216103238387 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (216103238363) and next prime (216103238411).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-216103238387 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (216103238317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108051619193 + 108051619194.

It is an arithmetic number, because the mean of its divisors is an integer number (108051619194).

Almost surely, 2^216103238387 is an apocalyptic number.

216103238387 is a deficient number, since it is larger than the sum of its proper divisors (1).

216103238387 is an equidigital number, since it uses as much as digits as its factorization.

216103238387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 290304, while the sum is 44.

Adding to 216103238387 its reverse (783832301612), we get a palindrome (999935539999).

The spelling of 216103238387 in words is "two hundred sixteen billion, one hundred three million, two hundred thirty-eight thousand, three hundred eighty-seven".