40713191 has 2 divisors, whose sum is σ = 40713192. Its totient is φ = 40713190.

The previous prime is 40713173. The next prime is 40713193. The reversal of 40713191 is 19131704.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40713191 is a prime.

It is a Sophie Germain prime.

Together with 40713193, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40713191.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40713193) 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, 20356595 + 20356596.

It is an arithmetic number, because the mean of its divisors is an integer number (20356596).

Almost surely, 2^40713191 is an apocalyptic number.

40713191 is a deficient number, since it is larger than the sum of its proper divisors (1).

40713191 is an equidigital number, since it uses as much as digits as its factorization.

40713191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 40713191 is about 6380.6889126489. The cubic root of 40713191 is about 344.0157932852.

Adding to 40713191 its reverse (19131704), we get a palindrome (59844895).

It can be divided in two parts, 40713 and 191, that added together give a palindrome (40904).

The spelling of 40713191 in words is "forty million, seven hundred thirteen thousand, one hundred ninety-one".