256216107 has 16 divisors (see below), whose sum is σ = 396253952. Its totient is φ = 144223200.

The previous prime is 256216097. The next prime is 256216109. The reversal of 256216107 is 701612652.

256216107 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 256216107 - 2⁷ = 256215979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256216109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89644 + ... + 92457.

It is an arithmetic number, because the mean of its divisors is an integer number (24765872).

Almost surely, 2^256216107 is an apocalyptic number.

256216107 is a deficient number, since it is larger than the sum of its proper divisors (140037845).

256216107 is a wasteful number, since it uses less digits than its factorization.

256216107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182178.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 256216107 is about 16006.7519191121. The cubic root of 256216107 is about 635.1390416176.

Adding to 256216107 its reverse (701612652), we get a palindrome (957828759).

The spelling of 256216107 in words is "two hundred fifty-six million, two hundred sixteen thousand, one hundred seven".