40131571 has 2 divisors, whose sum is σ = 40131572. Its totient is φ = 40131570.

The previous prime is 40131541. The next prime is 40131587. The reversal of 40131571 is 17513104.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40131571 - 2¹⁹ = 39607283 is a prime.

It is a super-2 number, since 2×40131571² = 3221085981856082, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40131541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20065785 + 20065786.

It is an arithmetic number, because the mean of its divisors is an integer number (20065786).

Almost surely, 2^40131571 is an apocalyptic number.

40131571 is a deficient number, since it is larger than the sum of its proper divisors (1).

40131571 is an equidigital number, since it uses as much as digits as its factorization.

40131571 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 40131571 is about 6334.9483817944. The cubic root of 40131571 is about 342.3697510317.

Adding to 40131571 its reverse (17513104), we get a palindrome (57644675).

The spelling of 40131571 in words is "forty million, one hundred thirty-one thousand, five hundred seventy-one".