40131319 has 2 divisors, whose sum is σ = 40131320. Its totient is φ = 40131318.

The previous prime is 40131317. The next prime is 40131323. The reversal of 40131319 is 91313104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40131319 - 2¹ = 40131317 is a prime.

It is a super-2 number, since 2×40131319² = 3221045529359522, which contains 22 as substring.

Together with 40131317, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 40131319.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40131317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20065659 + 20065660.

It is an arithmetic number, because the mean of its divisors is an integer number (20065660).

Almost surely, 2^40131319 is an apocalyptic number.

40131319 is a deficient number, since it is larger than the sum of its proper divisors (1).

40131319 is an equidigital number, since it uses as much as digits as its factorization.

40131319 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 40131319 is about 6334.9284920984. The cubic root of 40131319 is about 342.3690344109.

The spelling of 40131319 in words is "forty million, one hundred thirty-one thousand, three hundred nineteen".