216352513 has 8 divisors (see below), whose sum is σ = 243125568. Its totient is φ = 191026704.

The previous prime is 216352511. The next prime is 216352517. The reversal of 216352513 is 315253612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 216352513 - 2¹ = 216352511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216352511) 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, 361495 + ... + 362092.

It is an arithmetic number, because the mean of its divisors is an integer number (30390696).

Almost surely, 2^216352513 is an apocalyptic number.

216352513 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

216352513 is a deficient number, since it is larger than the sum of its proper divisors (26773055).

216352513 is a wasteful number, since it uses less digits than its factorization.

216352513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723623.

The product of its digits is 5400, while the sum is 28.

The square root of 216352513 is about 14708.9263034390. The cubic root of 216352513 is about 600.3262235241.

The spelling of 216352513 in words is "two hundred sixteen million, three hundred fifty-two thousand, five hundred thirteen".