216325134 has 32 divisors (see below), whose sum is σ = 487316640. Its totient is φ = 71119296.

The previous prime is 216325121. The next prime is 216325163. The reversal of 216325134 is 431523612.

216325134 is a `hidden beast` number, since 21 + 632 + 5 + 1 + 3 + 4 = 666.

216325134 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 216325098 and 216325107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23497 + ... + 31380.

It is an arithmetic number, because the mean of its divisors is an integer number (15228645).

Almost surely, 2^216325134 is an apocalyptic number.

216325134 is an abundant number, since it is smaller than the sum of its proper divisors (270991506).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216325134 is a wasteful number, since it uses less digits than its factorization.

216325134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54961 (or 54955 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 216325134 is about 14707.9955806357. The cubic root of 216325134 is about 600.3008990744.

Adding to 216325134 its reverse (431523612), we get a palindrome (647848746).

The spelling of 216325134 in words is "two hundred sixteen million, three hundred twenty-five thousand, one hundred thirty-four".