40731975 has 18 divisors (see below), whose sum is σ = 72955896. Its totient is φ = 21723600.

The previous prime is 40731941. The next prime is 40731989. The reversal of 40731975 is 57913704.

It is a happy number.

40731975 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40731975 - 2¹⁰ = 40730951 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 90291 + ... + 90740.

Almost surely, 2^40731975 is an apocalyptic number.

40731975 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

40731975 is a deficient number, since it is larger than the sum of its proper divisors (32223921).

40731975 is a wasteful number, since it uses less digits than its factorization.

40731975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181047 (or 181039 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 36.

The square root of 40731975 is about 6382.1606842824. The cubic root of 40731975 is about 344.0686917763.

The spelling of 40731975 in words is "forty million, seven hundred thirty-one thousand, nine hundred seventy-five".