216103061 has 4 divisors (see below), whose sum is σ = 216389292. Its totient is φ = 215816832.

The previous prime is 216103049. The next prime is 216103081. The reversal of 216103061 is 160301612.

216103061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 166668100 + 49434961 = 12910^2 + 7031^2 .

It is a cyclic number.

It is not a de Polignac number, because 216103061 - 2¹⁸ = 215840917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216103001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141980 + ... + 143493.

It is an arithmetic number, because the mean of its divisors is an integer number (54097323).

Almost surely, 2^216103061 is an apocalyptic number.

It is an amenable number.

216103061 is a deficient number, since it is larger than the sum of its proper divisors (286231).

216103061 is an equidigital number, since it uses as much as digits as its factorization.

216103061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286230.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 216103061 is about 14700.4442449880. Note that the first 3 decimals coincide. The cubic root of 216103061 is about 600.0954116787.

Adding to 216103061 its reverse (160301612), we get a palindrome (376404673).

The spelling of 216103061 in words is "two hundred sixteen million, one hundred three thousand, sixty-one".