216130003 has 4 divisors (see below), whose sum is σ = 218558520. Its totient is φ = 213701488.

The previous prime is 216129989. The next prime is 216130009. The reversal of 216130003 is 300031612.

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

It is a cyclic number.

It is not a de Polignac number, because 216130003 - 2²⁵ = 182575571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216130009) 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, 1214125 + ... + 1214302.

It is an arithmetic number, because the mean of its divisors is an integer number (54639630).

Almost surely, 2^216130003 is an apocalyptic number.

216130003 is a deficient number, since it is larger than the sum of its proper divisors (2428517).

216130003 is an equidigital number, since it uses as much as digits as its factorization.

216130003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2428516.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 216130003 is about 14701.3605832930. The cubic root of 216130003 is about 600.1203490067.

Adding to 216130003 its reverse (300031612), we get a palindrome (516161615).

The spelling of 216130003 in words is "two hundred sixteen million, one hundred thirty thousand, three".