40204331 has 2 divisors, whose sum is σ = 40204332. Its totient is φ = 40204330.

The previous prime is 40204327. The next prime is 40204349. The reversal of 40204331 is 13340204.

40204331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40204331 - 2² = 40204327 is a prime.

It is a super-2 number, since 2×40204331² = 3232776462315122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40204301) 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, 20102165 + 20102166.

It is an arithmetic number, because the mean of its divisors is an integer number (20102166).

Almost surely, 2^40204331 is an apocalyptic number.

40204331 is a deficient number, since it is larger than the sum of its proper divisors (1).

40204331 is an equidigital number, since it uses as much as digits as its factorization.

40204331 is an odious number, because the sum of its binary digits is odd.

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

The square root of 40204331 is about 6340.6885272816. The cubic root of 40204331 is about 342.5765357224.

Adding to 40204331 its reverse (13340204), we get a palindrome (53544535).

The spelling of 40204331 in words is "forty million, two hundred four thousand, three hundred thirty-one".