40131279 has 12 divisors (see below), whose sum is σ = 59201376. Its totient is φ = 26184672.

The previous prime is 40131253. The next prime is 40131281. The reversal of 40131279 is 97213104.

It is not a de Polignac number, because 40131279 - 2⁸ = 40131023 is a prime.

It is a super-2 number, since 2×40131279² = 3221039108351682, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40131209) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47014 + ... + 47859.

It is an arithmetic number, because the mean of its divisors is an integer number (4933448).

Almost surely, 2^40131279 is an apocalyptic number.

40131279 is a deficient number, since it is larger than the sum of its proper divisors (19070097).

40131279 is a wasteful number, since it uses less digits than its factorization.

40131279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94926 (or 94923 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 40131279 is about 6334.9253349980. The cubic root of 40131279 is about 342.3689206613.

The spelling of 40131279 in words is "forty million, one hundred thirty-one thousand, two hundred seventy-nine".