216435130 has 16 divisors (see below), whose sum is σ = 393601320. Its totient is φ = 85681152.

The previous prime is 216435127. The next prime is 216435133. The reversal of 216435130 is 31534612.

It is an interprime number because it is at equal distance from previous prime (216435127) and next prime (216435133).

It can be written as a sum of positive squares in 4 ways, for example, as 99341089 + 117094041 = 9967^2 + 10821^2 .

It is a junction number, because it is equal to n+sod(n) for n = 216435095 and 216435104.

It is not an unprimeable number, because it can be changed into a prime (216435133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110595 + ... + 112534.

Almost surely, 2^216435130 is an apocalyptic number.

216435130 is a deficient number, since it is larger than the sum of its proper divisors (177166190).

216435130 is a wasteful number, since it uses less digits than its factorization.

216435130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223233.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 216435130 is about 14711.7344320784. The cubic root of 216435130 is about 600.4026279057.

Adding to 216435130 its reverse (31534612), we get a palindrome (247969742).

The spelling of 216435130 in words is "two hundred sixteen million, four hundred thirty-five thousand, one hundred thirty".