256340134 has 16 divisors (see below), whose sum is σ = 405100800. Its totient is φ = 121318344.

The previous prime is 256340131. The next prime is 256340137. The reversal of 256340134 is 431043652.

256340134 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (256340131) and next prime (256340137).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256340131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57079 + ... + 61405.

It is an arithmetic number, because the mean of its divisors is an integer number (25318800).

Almost surely, 2^256340134 is an apocalyptic number.

256340134 is a deficient number, since it is larger than the sum of its proper divisors (148760666).

256340134 is a wasteful number, since it uses less digits than its factorization.

256340134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5907.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 256340134 is about 16010.6256592302. The cubic root of 256340134 is about 635.2415093917.

Adding to 256340134 its reverse (431043652), we get a palindrome (687383786).

The spelling of 256340134 in words is "two hundred fifty-six million, three hundred forty thousand, one hundred thirty-four".