40531911 has 32 divisors (see below), whose sum is σ = 66551808. Its totient is φ = 21431520.

The previous prime is 40531901. The next prime is 40531913. The reversal of 40531911 is 11913504.

It is not a de Polignac number, because 40531911 - 2⁷ = 40531783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40531913) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13620 + ... + 16326.

It is an arithmetic number, because the mean of its divisors is an integer number (2079744).

Almost surely, 2^40531911 is an apocalyptic number.

40531911 is a deficient number, since it is larger than the sum of its proper divisors (26019897).

40531911 is a wasteful number, since it uses less digits than its factorization.

40531911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2771.

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 40531911 is about 6366.4677019522. The cubic root of 40531911 is about 343.5044440903.

The spelling of 40531911 in words is "forty million, five hundred thirty-one thousand, nine hundred eleven".