40304231 has 8 divisors (see below), whose sum is σ = 44023824. Its totient is φ = 36593920.

The previous prime is 40304227. The next prime is 40304233. The reversal of 40304231 is 13240304.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40304231 - 2² = 40304227 is a prime.

It is a super-2 number, since 2×40304231² = 3248862073002722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40304233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9335 + ... + 12951.

It is an arithmetic number, because the mean of its divisors is an integer number (5502978).

Almost surely, 2^40304231 is an apocalyptic number.

40304231 is a deficient number, since it is larger than the sum of its proper divisors (3719593).

40304231 is a wasteful number, since it uses less digits than its factorization.

40304231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4641.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 40304231 is about 6348.5613330896. The cubic root of 40304231 is about 342.8600465445.

Adding to 40304231 its reverse (13240304), we get a palindrome (53544535).

The spelling of 40304231 in words is "forty million, three hundred four thousand, two hundred thirty-one".