256020312 has 32 divisors (see below), whose sum is σ = 640442880. Its totient is φ = 85287840.

The previous prime is 256020287. The next prime is 256020367. The reversal of 256020312 is 213020652.

256020312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 74913 + ... + 78255.

It is an arithmetic number, because the mean of its divisors is an integer number (20013840).

Almost surely, 2^256020312 is an apocalyptic number.

It is an amenable number.

256020312 is an abundant number, since it is smaller than the sum of its proper divisors (384422568).

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

256020312 is a wasteful number, since it uses less digits than its factorization.

256020312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6543 (or 6539 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 256020312 is about 16000.6347374096. The cubic root of 256020312 is about 634.9772137234.

Adding to 256020312 its reverse (213020652), we get a palindrome (469040964).

The spelling of 256020312 in words is "two hundred fifty-six million, twenty thousand, three hundred twelve".