216302134 has 4 divisors (see below), whose sum is σ = 324453204. Its totient is φ = 108151066.

The previous prime is 216302123. The next prime is 216302161. The reversal of 216302134 is 431203612.

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

It is a super-2 number, since 2×216302134² = 93573226345907912, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54075532 + ... + 54075535.

It is an arithmetic number, because the mean of its divisors is an integer number (81113301).

Almost surely, 2^216302134 is an apocalyptic number.

216302134 is a deficient number, since it is larger than the sum of its proper divisors (108151070).

216302134 is a wasteful number, since it uses less digits than its factorization.

216302134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108151069.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 216302134 is about 14707.2136722086. The cubic root of 216302134 is about 600.2796233681.

Adding to 216302134 its reverse (431203612), we get a palindrome (647505746).

The spelling of 216302134 in words is "two hundred sixteen million, three hundred two thousand, one hundred thirty-four".