256431062 has 4 divisors (see below), whose sum is σ = 384646596. Its totient is φ = 128215530.

The previous prime is 256431047. The next prime is 256431143. The reversal of 256431062 is 260134652.

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, 64107764 + ... + 64107767.

It is an arithmetic number, because the mean of its divisors is an integer number (96161649).

Almost surely, 2^256431062 is an apocalyptic number.

256431062 is a deficient number, since it is larger than the sum of its proper divisors (128215534).

256431062 is a wasteful number, since it uses less digits than its factorization.

256431062 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128215533.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 256431062 is about 16013.4650216622. The cubic root of 256431062 is about 635.3166106654.

The spelling of 256431062 in words is "two hundred fifty-six million, four hundred thirty-one thousand, sixty-two".