216343254 has 16 divisors (see below), whose sum is σ = 433690992. Its totient is φ = 71947008.

The previous prime is 216343249. The next prime is 216343261. The reversal of 216343254 is 452343612.

216343254 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39039 + ... + 44234.

It is an arithmetic number, because the mean of its divisors is an integer number (27105687).

Almost surely, 2^216343254 is an apocalyptic number.

216343254 is an abundant number, since it is smaller than the sum of its proper divisors (217347738).

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

216343254 is a wasteful number, since it uses less digits than its factorization.

216343254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83711.

The product of its digits is 17280, while the sum is 30.

The square root of 216343254 is about 14708.6115592193. The cubic root of 216343254 is about 600.3176595688.

Adding to 216343254 its reverse (452343612), we get a palindrome (668686866).

The spelling of 216343254 in words is "two hundred sixteen million, three hundred forty-three thousand, two hundred fifty-four".