316256642 has 16 divisors (see below), whose sum is σ = 511443072. Its totient is φ = 145802640.

The previous prime is 316256623. The next prime is 316256651. The reversal of 316256642 is 246652613.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18983 + ... + 31509.

It is an arithmetic number, because the mean of its divisors is an integer number (31965192).

Almost surely, 2^316256642 is an apocalyptic number.

316256642 is a deficient number, since it is larger than the sum of its proper divisors (195186430).

316256642 is a wasteful number, since it uses less digits than its factorization.

316256642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13513.

The product of its digits is 51840, while the sum is 35.

The square root of 316256642 is about 17783.6059897873. The cubic root of 316256642 is about 681.3128055667.

The spelling of 316256642 in words is "three hundred sixteen million, two hundred fifty-six thousand, six hundred forty-two".