40031003 has 4 divisors (see below), whose sum is σ = 41112960. Its totient is φ = 38949048.

The previous prime is 40030999. The next prime is 40031009. The reversal of 40031003 is 30013004.

40031003 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 40031003 - 2² = 40030999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40031009) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 540923 + ... + 540996.

It is an arithmetic number, because the mean of its divisors is an integer number (10278240).

Almost surely, 2^40031003 is an apocalyptic number.

40031003 is a deficient number, since it is larger than the sum of its proper divisors (1081957).

40031003 is a wasteful number, since it uses less digits than its factorization.

40031003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1081956.

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 40031003 is about 6327.0058479505. The cubic root of 40031003 is about 342.0835238244.

Adding to 40031003 its reverse (30013004), we get a palindrome (70044007).

The spelling of 40031003 in words is "forty million, thirty-one thousand, three".