40340365231 has 2 divisors, whose sum is σ = 40340365232. Its totient is φ = 40340365230.

The previous prime is 40340365207. The next prime is 40340365253. The reversal of 40340365231 is 13256304304.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40340365231 - 2⁷ = 40340365103 is a prime.

It is a super-2 number, since 2×40340365231² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40340365193 and 40340365202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40340365031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20170182615 + 20170182616.

It is an arithmetic number, because the mean of its divisors is an integer number (20170182616).

Almost surely, 2^40340365231 is an apocalyptic number.

40340365231 is a deficient number, since it is larger than the sum of its proper divisors (1).

40340365231 is an equidigital number, since it uses as much as digits as its factorization.

40340365231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 31.

Adding to 40340365231 its reverse (13256304304), we get a palindrome (53596669535).

The spelling of 40340365231 in words is "forty billion, three hundred forty million, three hundred sixty-five thousand, two hundred thirty-one".