40131304209 has 6 divisors (see below), whose sum is σ = 57967439426. Its totient is φ = 26754202800.

The previous prime is 40131304193. The next prime is 40131304217. The reversal of 40131304209 is 90240313104.

It can be written as a sum of positive squares in only one way, i.e., 29199974400 + 10931329809 = 170880^2 + 104553^2 .

It is not a de Polignac number, because 40131304209 - 2⁴ = 40131304193 is a prime.

It is a super-2 number, since 2×40131304209² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40131304249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2229516892 + ... + 2229516909.

Almost surely, 2^40131304209 is an apocalyptic number.

It is an amenable number.

40131304209 is a deficient number, since it is larger than the sum of its proper divisors (17836135217).

40131304209 is a wasteful number, since it uses less digits than its factorization.

40131304209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4459033807 (or 4459033804 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The spelling of 40131304209 in words is "forty billion, one hundred thirty-one million, three hundred four thousand, two hundred nine".