256201347 has 32 divisors (see below), whose sum is σ = 364654080. Its totient is φ = 159667200.

The previous prime is 256201331. The next prime is 256201411. The reversal of 256201347 is 743102652.

It is not a de Polignac number, because 256201347 - 2⁴ = 256201331 is a prime.

It is a super-2 number, since 2×256201347² = 131278260409228818, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (256201327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 675804 + ... + 676182.

It is an arithmetic number, because the mean of its divisors is an integer number (11395440).

Almost surely, 2^256201347 is an apocalyptic number.

256201347 is a deficient number, since it is larger than the sum of its proper divisors (108452733).

256201347 is a wasteful number, since it uses less digits than its factorization.

256201347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 256201347 is about 16006.2908570349. The cubic root of 256201347 is about 635.1268451006.

Adding to 256201347 its reverse (743102652), we get a palindrome (999303999).

The spelling of 256201347 in words is "two hundred fifty-six million, two hundred one thousand, three hundred forty-seven".