40031269 has 2 divisors, whose sum is σ = 40031270. Its totient is φ = 40031268.

The previous prime is 40031239. The next prime is 40031273. The reversal of 40031269 is 96213004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37675044 + 2356225 = 6138^2 + 1535^2 .

It is a cyclic number.

It is not a de Polignac number, because 40031269 - 2¹⁷ = 39900197 is a prime.

It is a super-2 number, since 2×40031269² = 3205004995500722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40031239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20015634 + 20015635.

It is an arithmetic number, because the mean of its divisors is an integer number (20015635).

Almost surely, 2^40031269 is an apocalyptic number.

It is an amenable number.

40031269 is a deficient number, since it is larger than the sum of its proper divisors (1).

40031269 is an equidigital number, since it uses as much as digits as its factorization.

40031269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 40031269 is about 6327.0268689172. The cubic root of 40031269 is about 342.0842815206.

The spelling of 40031269 in words is "forty million, thirty-one thousand, two hundred sixty-nine".