256750231 has 8 divisors (see below), whose sum is σ = 260856704. Its totient is φ = 252651960.

The previous prime is 256750223. The next prime is 256750279. The reversal of 256750231 is 132057652.

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

It is a cyclic number.

It is not a de Polignac number, because 256750231 - 2³ = 256750223 is a prime.

It is a super-2 number, since 2×256750231² = 131841362237106722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 256750193 and 256750202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256750531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101326 + ... + 103828.

It is an arithmetic number, because the mean of its divisors is an integer number (32607088).

Almost surely, 2^256750231 is an apocalyptic number.

256750231 is a deficient number, since it is larger than the sum of its proper divisors (4106473).

256750231 is a wasteful number, since it uses less digits than its factorization.

256750231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4101.

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 256750231 is about 16023.4275671593. The cubic root of 256750231 is about 635.5800853735.

The spelling of 256750231 in words is "two hundred fifty-six million, seven hundred fifty thousand, two hundred thirty-one".