256107312 has 160 divisors (see below), whose sum is σ = 797448960. Its totient is φ = 78382080.

The previous prime is 256107283. The next prime is 256107317. The reversal of 256107312 is 213701652.

It is a happy number.

256107312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (256107317) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 315387 + ... + 316197.

It is an arithmetic number, because the mean of its divisors is an integer number (4984056).

Almost surely, 2^256107312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 256107312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (398724480).

256107312 is an abundant number, since it is smaller than the sum of its proper divisors (541341648).

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

256107312 is a wasteful number, since it uses less digits than its factorization.

256107312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 888 (or 876 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 256107312 is about 16003.3531486373. The cubic root of 256107312 is about 635.0491308835.

Adding to 256107312 its reverse (213701652), we get a palindrome (469808964).

The spelling of 256107312 in words is "two hundred fifty-six million, one hundred seven thousand, three hundred twelve".