40031403 has 8 divisors (see below), whose sum is σ = 53695488. Its totient is φ = 26527464.

The previous prime is 40031401. The next prime is 40031419. The reversal of 40031403 is 30413004.

40031403 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40031403 - 2¹ = 40031401 is a prime.

It is a super-2 number, since 2×40031403² = 3205026452296818, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40031401) 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 7 ways as a sum of consecutive naturals, for example, 39451 + ... + 40452.

It is an arithmetic number, because the mean of its divisors is an integer number (6711936).

Almost surely, 2^40031403 is an apocalyptic number.

40031403 is a deficient number, since it is larger than the sum of its proper divisors (13664085).

40031403 is a wasteful number, since it uses less digits than its factorization.

40031403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80073.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 40031403 is about 6327.0374584003. The cubic root of 40031403 is about 342.0846632159.

Adding to 40031403 its reverse (30413004), we get a palindrome (70444407).

The spelling of 40031403 in words is "forty million, thirty-one thousand, four hundred three".