256313254 has 4 divisors (see below), whose sum is σ = 384469884. Its totient is φ = 128156626.

The previous prime is 256313237. The next prime is 256313261. The reversal of 256313254 is 452313652.

It is a happy number.

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 polite number, since it can be written as a sum of consecutive naturals, namely, 64078312 + ... + 64078315.

It is an arithmetic number, because the mean of its divisors is an integer number (96117471).

Almost surely, 2^256313254 is an apocalyptic number.

256313254 is a deficient number, since it is larger than the sum of its proper divisors (128156630).

256313254 is a wasteful number, since it uses less digits than its factorization.

256313254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128156629.

The product of its digits is 21600, while the sum is 31.

The square root of 256313254 is about 16009.7861946998. The cubic root of 256313254 is about 635.2193046639.

The spelling of 256313254 in words is "two hundred fifty-six million, three hundred thirteen thousand, two hundred fifty-four".