40232191 has 2 divisors, whose sum is σ = 40232192. Its totient is φ = 40232190.

The previous prime is 40232173. The next prime is 40232207. The reversal of 40232191 is 19123204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40232191 - 2¹⁷ = 40101119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40232131) 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 as a sum of consecutive naturals, namely, 20116095 + 20116096.

It is an arithmetic number, because the mean of its divisors is an integer number (20116096).

Almost surely, 2^40232191 is an apocalyptic number.

40232191 is a deficient number, since it is larger than the sum of its proper divisors (1).

40232191 is an equidigital number, since it uses as much as digits as its factorization.

40232191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 40232191 is about 6342.8850691148. The cubic root of 40232191 is about 342.6556480826.

Adding to 40232191 its reverse (19123204), we get a palindrome (59355395).

The spelling of 40232191 in words is "forty million, two hundred thirty-two thousand, one hundred ninety-one".