40133231 has 2 divisors, whose sum is σ = 40133232. Its totient is φ = 40133230.

The previous prime is 40133227. The next prime is 40133267. The reversal of 40133231 is 13233104.

It is a happy number.

40133231 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 40133231 - 2² = 40133227 is a prime.

It is a super-2 number, since 2×40133231² = 3221352460998722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40133131) 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, 20066615 + 20066616.

It is an arithmetic number, because the mean of its divisors is an integer number (20066616).

Almost surely, 2^40133231 is an apocalyptic number.

40133231 is a deficient number, since it is larger than the sum of its proper divisors (1).

40133231 is an equidigital number, since it uses as much as digits as its factorization.

40133231 is an odious number, because the sum of its binary digits is odd.

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

The square root of 40133231 is about 6335.0793996603. The cubic root of 40133231 is about 342.3744715542.

Adding to 40133231 its reverse (13233104), we get a palindrome (53366335).

The spelling of 40133231 in words is "forty million, one hundred thirty-three thousand, two hundred thirty-one".