256231102 has 4 divisors (see below), whose sum is σ = 384346656. Its totient is φ = 128115550.

The previous prime is 256231067. The next prime is 256231121. The reversal of 256231102 is 201132652.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 64057774 + ... + 64057777.

It is an arithmetic number, because the mean of its divisors is an integer number (96086664).

Almost surely, 2^256231102 is an apocalyptic number.

256231102 is a deficient number, since it is larger than the sum of its proper divisors (128115554).

256231102 is a wasteful number, since it uses less digits than its factorization.

256231102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128115553.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 256231102 is about 16007.2203083484. The cubic root of 256231102 is about 635.1514318406.

Adding to 256231102 its reverse (201132652), we get a palindrome (457363754).

The spelling of 256231102 in words is "two hundred fifty-six million, two hundred thirty-one thousand, one hundred two".