40938531 has 8 divisors (see below), whose sum is σ = 54622224. Its totient is φ = 27273600.

The previous prime is 40938523. The next prime is 40938571. The reversal of 40938531 is 13583904.

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

It is not a de Polignac number, because 40938531 - 2³ = 40938523 is a prime.

It is a super-2 number, since 2×40938531² = 3351926640875922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40938492 and 40938501.

It is not an unprimeable number, because it can be changed into a prime (40938571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1615 + ... + 9191.

It is an arithmetic number, because the mean of its divisors is an integer number (6827778).

Almost surely, 2^40938531 is an apocalyptic number.

40938531 is a deficient number, since it is larger than the sum of its proper divisors (13683693).

40938531 is a wasteful number, since it uses less digits than its factorization.

40938531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9381.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 40938531 is about 6398.3225145346. The cubic root of 40938531 is about 344.6493138922.

The spelling of 40938531 in words is "forty million, nine hundred thirty-eight thousand, five hundred thirty-one".