40131005 has 8 divisors (see below), whose sum is σ = 49332024. Its totient is φ = 31321600.

The previous prime is 40130989. The next prime is 40131011. The reversal of 40131005 is 50013104.

It can be written as a sum of positive squares in 4 ways, for example, as 1653796 + 38477209 = 1286^2 + 6203^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40131005 - 2⁴ = 40130989 is a prime.

It is a super-2 number, since 2×40131005² = 3220995124620050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97676 + ... + 98085.

It is an arithmetic number, because the mean of its divisors is an integer number (6166503).

Almost surely, 2^40131005 is an apocalyptic number.

It is an amenable number.

40131005 is a deficient number, since it is larger than the sum of its proper divisors (9201019).

40131005 is a wasteful number, since it uses less digits than its factorization.

40131005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195807.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 40131005 is about 6334.9037088183. The cubic root of 40131005 is about 342.3681414744.

Adding to 40131005 its reverse (50013104), we get a palindrome (90144109).

The spelling of 40131005 in words is "forty million, one hundred thirty-one thousand, five".