320851136 has 28 divisors (see below), whose sum is σ = 639199128. Its totient is φ = 159793152.

The previous prime is 320851109. The next prime is 320851151. The reversal of 320851136 is 631158023.

It is a junction number, because it is equal to n+sod(n) for n = 320851099 and 320851108.

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, 6695 + ... + 26201.

Almost surely, 2^320851136 is an apocalyptic number.

It is an amenable number.

320851136 is a deficient number, since it is larger than the sum of its proper divisors (318347992).

320851136 is a wasteful number, since it uses less digits than its factorization.

320851136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19776 (or 19766 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 320851136 is about 17912.3179962840. The cubic root of 320851136 is about 684.5962676763.

The spelling of 320851136 in words is "three hundred twenty million, eight hundred fifty-one thousand, one hundred thirty-six".