320656136 has 16 divisors (see below), whose sum is σ = 602606400. Its totient is φ = 159961104.

The previous prime is 320656129. The next prime is 320656151. The reversal of 320656136 is 631656023.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42140 + ... + 49163.

It is an arithmetic number, because the mean of its divisors is an integer number (37662900).

Almost surely, 2^320656136 is an apocalyptic number.

It is an amenable number.

320656136 is a deficient number, since it is larger than the sum of its proper divisors (281950264).

320656136 is a wasteful number, since it uses less digits than its factorization.

320656136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91748 (or 91744 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 32.

The square root of 320656136 is about 17906.8739873826. The cubic root of 320656136 is about 684.4575498403.

The spelling of 320656136 in words is "three hundred twenty million, six hundred fifty-six thousand, one hundred thirty-six".