216341451 has 6 divisors (see below), whose sum is σ = 312493220. Its totient is φ = 144227628.

The previous prime is 216341431. The next prime is 216341453. The reversal of 216341451 is 154143612.

It is a happy number.

216341451 is a `hidden beast` number, since 21 + 634 + 1 + 4 + 5 + 1 = 666.

It is not a de Polignac number, because 216341451 - 2¹⁰ = 216340427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216341453) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12018961 + ... + 12018978.

Almost surely, 2^216341451 is an apocalyptic number.

216341451 is a deficient number, since it is larger than the sum of its proper divisors (96151769).

216341451 is a wasteful number, since it uses less digits than its factorization.

216341451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24037945 (or 24037942 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 216341451 is about 14708.5502684663. The cubic root of 216341451 is about 600.3159918860.

The spelling of 216341451 in words is "two hundred sixteen million, three hundred forty-one thousand, four hundred fifty-one".