320827331 has 16 divisors (see below), whose sum is σ = 369024000. Its totient is φ = 275853600.

The previous prime is 320827303. The next prime is 320827357. The reversal of 320827331 is 133728023.

It is a de Polignac number, because none of the positive numbers 2^k-320827331 is a prime.

It is a super-2 number, since 2×320827331² = 205860352633167122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320827294 and 320827303.

It is not an unprimeable number, because it can be changed into a prime (320827301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 206345 + ... + 207893.

It is an arithmetic number, because the mean of its divisors is an integer number (23064000).

Almost surely, 2^320827331 is an apocalyptic number.

320827331 is a deficient number, since it is larger than the sum of its proper divisors (48196669).

320827331 is a wasteful number, since it uses less digits than its factorization.

320827331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2570.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 320827331 is about 17911.6534970951. The cubic root of 320827331 is about 684.5793364421.

The spelling of 320827331 in words is "three hundred twenty million, eight hundred twenty-seven thousand, three hundred thirty-one".