256312306 has 8 divisors (see below), whose sum is σ = 384573420. Its totient is φ = 128121168.

The previous prime is 256312297. The next prime is 256312313. The reversal of 256312306 is 603213652.

256312306 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 246333025 + 9979281 = 15695^2 + 3159^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7101 + ... + 23728.

Almost surely, 2^256312306 is an apocalyptic number.

256312306 is a deficient number, since it is larger than the sum of its proper divisors (128261114).

256312306 is a wasteful number, since it uses less digits than its factorization.

256312306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34988.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 256312306 is about 16009.7565877811. The cubic root of 256312306 is about 635.2185215224.

Adding to 256312306 its reverse (603213652), we get a palindrome (859525958).

The spelling of 256312306 in words is "two hundred fifty-six million, three hundred twelve thousand, three hundred six".