40313191 has 2 divisors, whose sum is σ = 40313192. Its totient is φ = 40313190.

The previous prime is 40313179. The next prime is 40313201. The reversal of 40313191 is 19131304.

40313191 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40313191 - 2¹⁷ = 40182119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40313101) 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, 20156595 + 20156596.

It is an arithmetic number, because the mean of its divisors is an integer number (20156596).

Almost surely, 2^40313191 is an apocalyptic number.

40313191 is a deficient number, since it is larger than the sum of its proper divisors (1).

40313191 is an equidigital number, since it uses as much as digits as its factorization.

40313191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 40313191 is about 6349.2669655638. The cubic root of 40313191 is about 342.8854516391.

Adding to 40313191 its reverse (19131304), we get a palindrome (59444495).

It can be divided in two parts, 40313 and 191, that added together give a palindrome (40504).

The spelling of 40313191 in words is "forty million, three hundred thirteen thousand, one hundred ninety-one".