216310534 has 24 divisors (see below), whose sum is σ = 359791848. Its totient is φ = 96711840.

The previous prime is 216310519. The next prime is 216310553. The reversal of 216310534 is 435013612.

It is a junction number, because it is equal to n+sod(n) for n = 216310499 and 216310508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 589219 + ... + 589585.

It is an arithmetic number, because the mean of its divisors is an integer number (14991327).

Almost surely, 2^216310534 is an apocalyptic number.

216310534 is a deficient number, since it is larger than the sum of its proper divisors (143481314).

216310534 is an equidigital number, since it uses as much as digits as its factorization.

216310534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 820 (or 453 counting only the distinct ones).

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

The square root of 216310534 is about 14707.4992435832. The cubic root of 216310534 is about 600.2873938008.

The spelling of 216310534 in words is "two hundred sixteen million, three hundred ten thousand, five hundred thirty-four".