40131071 has 2 divisors, whose sum is σ = 40131072. Its totient is φ = 40131070.

The previous prime is 40131043. The next prime is 40131109. The reversal of 40131071 is 17013104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40131071 - 2²² = 35936767 is a prime.

It is a super-2 number, since 2×40131071² = 3221005719214082, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40131011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20065535 + 20065536.

It is an arithmetic number, because the mean of its divisors is an integer number (20065536).

Almost surely, 2^40131071 is an apocalyptic number.

40131071 is a deficient number, since it is larger than the sum of its proper divisors (1).

40131071 is an equidigital number, since it uses as much as digits as its factorization.

40131071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 40131071 is about 6334.9089180508. The cubic root of 40131071 is about 342.3683291621.

Adding to 40131071 its reverse (17013104), we get a palindrome (57144175).

The spelling of 40131071 in words is "forty million, one hundred thirty-one thousand, seventy-one".