40331304 has 128 divisors (see below), whose sum is σ = 123379200. Its totient is φ = 12130560.

The previous prime is 40331297. The next prime is 40331323. The reversal of 40331304 is 40313304.

It is a super-2 number, since 2×40331304² = 3253228164680832, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 148689 + ... + 148959.

It is an arithmetic number, because the mean of its divisors is an integer number (963900).

Almost surely, 2^40331304 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40331304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61689600).

40331304 is an abundant number, since it is smaller than the sum of its proper divisors (83047896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40331304 is a wasteful number, since it uses less digits than its factorization.

40331304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352 (or 342 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 40331304 is about 6350.6931905108. The cubic root of 40331304 is about 342.9367975641.

Adding to 40331304 its reverse (40313304), we get a palindrome (80644608).

The spelling of 40331304 in words is "forty million, three hundred thirty-one thousand, three hundred four".