256130310 has 32 divisors (see below), whose sum is σ = 615494880. Its totient is φ = 68214528.

The previous prime is 256130309. The next prime is 256130311. The reversal of 256130310 is 13031652.

It is an interprime number because it is at equal distance from previous prime (256130309) and next prime (256130311).

It is a super-2 number, since 2×256130310² = 131205471401392200, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256130311) 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 15 ways as a sum of consecutive naturals, for example, 20586 + ... + 30594.

It is an arithmetic number, because the mean of its divisors is an integer number (19234215).

Almost surely, 2^256130310 is an apocalyptic number.

256130310 is an abundant number, since it is smaller than the sum of its proper divisors (359364570).

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

256130310 is a wasteful number, since it uses less digits than its factorization.

256130310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10872.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 256130310 is about 16004.0716694221. The cubic root of 256130310 is about 635.0681390910.

Adding to 256130310 its reverse (13031652), we get a palindrome (269161962).

The spelling of 256130310 in words is "two hundred fifty-six million, one hundred thirty thousand, three hundred ten".