40531073 has 4 divisors (see below), whose sum is σ = 44215728. Its totient is φ = 36846420.

The previous prime is 40531063. The next prime is 40531087. The reversal of 40531073 is 37013504.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40531073 - 2¹² = 40526977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40531003) 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 3 ways as a sum of consecutive naturals, for example, 1842311 + ... + 1842332.

It is an arithmetic number, because the mean of its divisors is an integer number (11053932).

Almost surely, 2^40531073 is an apocalyptic number.

It is an amenable number.

40531073 is a deficient number, since it is larger than the sum of its proper divisors (3684655).

40531073 is a wasteful number, since it uses less digits than its factorization.

40531073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3684654.

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 40531073 is about 6366.4018880369. The cubic root of 40531073 is about 343.5020767481.

Adding to 40531073 its reverse (37013504), we get a palindrome (77544577).

The spelling of 40531073 in words is "forty million, five hundred thirty-one thousand, seventy-three".