331809064 has 32 divisors (see below), whose sum is σ = 643948200. Its totient is φ = 160174080.

The previous prime is 331809047. The next prime is 331809067. The reversal of 331809064 is 460908133.

It can be written as a sum of positive squares in 4 ways, for example, as 291384900 + 40424164 = 17070^2 + 6358^2 .

It is a super-2 number, since 2×331809064² = 220194509905112192, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (331809067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26602 + ... + 37030.

Almost surely, 2^331809064 is an apocalyptic number.

It is an amenable number.

331809064 is a deficient number, since it is larger than the sum of its proper divisors (312139136).

331809064 is a wasteful number, since it uses less digits than its factorization.

331809064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10573 (or 10569 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 331809064 is about 18215.6269175672. The cubic root of 331809064 is about 692.3027899647.

The spelling of 331809064 in words is "three hundred thirty-one million, eight hundred nine thousand, sixty-four".