331004032 has 16 divisors (see below), whose sum is σ = 659422350. Its totient is φ = 165501952.

The previous prime is 331003969. The next prime is 331004039. The reversal of 331004032 is 230400133.

It can be written as a sum of positive squares in only one way, i.e., 256768576 + 74235456 = 16024^2 + 8616^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 331003997 and 331004015.

It is not an unprimeable number, because it can be changed into a prime (331004039) by changing a digit.

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 as a sum of consecutive naturals, namely, 1292857 + ... + 1293112.

Almost surely, 2^331004032 is an apocalyptic number.

331004032 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

331004032 is a deficient number, since it is larger than the sum of its proper divisors (328418318).

331004032 is an equidigital number, since it uses as much as digits as its factorization.

331004032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2585983 (or 2585971 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 331004032 is about 18193.5162077043. The cubic root of 331004032 is about 691.7424504050.

Adding to 331004032 its reverse (230400133), we get a palindrome (561404165).

The spelling of 331004032 in words is "three hundred thirty-one million, four thousand, thirty-two".