256311342 has 24 divisors (see below), whose sum is σ = 634676016. Its totient is φ = 73231776.

The previous prime is 256311337. The next prime is 256311359. The reversal of 256311342 is 243113652.

256311342 is a `hidden beast` number, since 2 + 5 + 6 + 311 + 342 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1016983 + ... + 1017234.

It is an arithmetic number, because the mean of its divisors is an integer number (26444834).

Almost surely, 2^256311342 is an apocalyptic number.

256311342 is an abundant number, since it is smaller than the sum of its proper divisors (378364674).

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

256311342 is a wasteful number, since it uses less digits than its factorization.

256311342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2034232 (or 2034229 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 256311342 is about 16009.7264811114. The cubic root of 256311342 is about 635.2177251614.

Adding to 256311342 its reverse (243113652), we get a palindrome (499424994).

The spelling of 256311342 in words is "two hundred fifty-six million, three hundred eleven thousand, three hundred forty-two".