40234331 has 2 divisors, whose sum is σ = 40234332. Its totient is φ = 40234330.

The previous prime is 40234307. The next prime is 40234387. The reversal of 40234331 is 13343204.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40234331 - 2¹⁸ = 39972187 is a prime.

It is a super-2 number, since 2×40234331² = 3237602782035122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40234301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20117165 + 20117166.

It is an arithmetic number, because the mean of its divisors is an integer number (20117166).

Almost surely, 2^40234331 is an apocalyptic number.

40234331 is a deficient number, since it is larger than the sum of its proper divisors (1).

40234331 is an equidigital number, since it uses as much as digits as its factorization.

40234331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 40234331 is about 6343.0537598226. The cubic root of 40234331 is about 342.6617234008.

Adding to 40234331 its reverse (13343204), we get a palindrome (53577535).

The spelling of 40234331 in words is "forty million, two hundred thirty-four thousand, three hundred thirty-one".