40131447 has 16 divisors (see below), whose sum is σ = 56064000. Its totient is φ = 25500384.

The previous prime is 40131437. The next prime is 40131449. The reversal of 40131447 is 74413104.

It is not a de Polignac number, because 40131447 - 2⁷ = 40131319 is a prime.

It is a super-2 number, since 2×40131447² = 3221066076627618, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40131449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3954 + ... + 9792.

It is an arithmetic number, because the mean of its divisors is an integer number (3504000).

Almost surely, 2^40131447 is an apocalyptic number.

40131447 is a deficient number, since it is larger than the sum of its proper divisors (15932553).

40131447 is a wasteful number, since it uses less digits than its factorization.

40131447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5950.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 40131447 is about 6334.9385948090. The cubic root of 40131447 is about 342.3693984091.

It can be divided in two parts, 4013 and 1447, that added together give a triangular number (5460 = T₁₀₄).

The spelling of 40131447 in words is "forty million, one hundred thirty-one thousand, four hundred forty-seven".