40531611 has 4 divisors (see below), whose sum is σ = 54042152. Its totient is φ = 27021072.

The previous prime is 40531609. The next prime is 40531619. The reversal of 40531611 is 11613504.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 40531611 - 2¹ = 40531609 is a prime.

It is a super-2 number, since 2×40531611² = 3285622980510642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40531619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6755266 + ... + 6755271.

It is an arithmetic number, because the mean of its divisors is an integer number (13510538).

Almost surely, 2^40531611 is an apocalyptic number.

40531611 is a deficient number, since it is larger than the sum of its proper divisors (13510541).

40531611 is a wasteful number, since it uses less digits than its factorization.

40531611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13510540.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 40531611 is about 6366.4441409628. Note that the first 3 decimals coincide. The cubic root of 40531611 is about 343.5035965969.

The spelling of 40531611 in words is "forty million, five hundred thirty-one thousand, six hundred eleven".