40131836 has 12 divisors (see below), whose sum is σ = 70277760. Its totient is φ = 20052480.

The previous prime is 40131797. The next prime is 40131851. The reversal of 40131836 is 63813104.

It is a super-2 number, since 2×40131836² = 3221128521461792, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6716 + ... + 11196.

It is an arithmetic number, because the mean of its divisors is an integer number (5856480).

Almost surely, 2^40131836 is an apocalyptic number.

It is an amenable number.

40131836 is a deficient number, since it is larger than the sum of its proper divisors (30145924).

40131836 is a wasteful number, since it uses less digits than its factorization.

40131836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6724 (or 6722 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 40131836 is about 6334.9692974789. The cubic root of 40131836 is about 342.3705046178.

The spelling of 40131836 in words is "forty million, one hundred thirty-one thousand, eight hundred thirty-six".