40231331 has 4 divisors (see below), whose sum is σ = 45978672. Its totient is φ = 34483992.

The previous prime is 40231319. The next prime is 40231339. The reversal of 40231331 is 13313204.

It is a happy number.

40231331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40231331 - 2¹⁸ = 39969187 is a prime.

It is a super-2 number, since 2×40231331² = 3237119988063122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40231339) 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 in 3 ways as a sum of consecutive naturals, for example, 2873660 + ... + 2873673.

It is an arithmetic number, because the mean of its divisors is an integer number (11494668).

Almost surely, 2^40231331 is an apocalyptic number.

40231331 is a deficient number, since it is larger than the sum of its proper divisors (5747341).

40231331 is an equidigital number, since it uses as much as digits as its factorization.

40231331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5747340.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 40231331 is about 6342.8172762582. The cubic root of 40231331 is about 342.6532065389.

Adding to 40231331 its reverse (13313204), we get a palindrome (53544535).

The spelling of 40231331 in words is "forty million, two hundred thirty-one thousand, three hundred thirty-one".