256241011 has 12 divisors (see below), whose sum is σ = 292075320. Its totient is φ = 224078400.

The previous prime is 256240993. The next prime is 256241077. The reversal of 256241011 is 110142652.

It is not a de Polignac number, because 256241011 - 2⁵ = 256240979 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256244011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36690 + ... + 43111.

It is an arithmetic number, because the mean of its divisors is an integer number (24339610).

Almost surely, 2^256241011 is an apocalyptic number.

256241011 is a deficient number, since it is larger than the sum of its proper divisors (35834309).

256241011 is a wasteful number, since it uses less digits than its factorization.

256241011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79846 (or 79833 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 256241011 is about 16007.5298219307. The cubic root of 256241011 is about 635.1596192860.

Adding to 256241011 its reverse (110142652), we get a palindrome (366383663).

The spelling of 256241011 in words is "two hundred fifty-six million, two hundred forty-one thousand, eleven".