40503331 has 16 divisors (see below), whose sum is σ = 45504000. Its totient is φ = 35736480.

The previous prime is 40503319. The next prime is 40503347. The reversal of 40503331 is 13330504.

It is a cyclic number.

It is not a de Polignac number, because 40503331 - 2¹⁷ = 40372259 is a prime.

It is a super-2 number, since 2×40503331² = 3281039644191122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40503299 and 40503308.

It is not an unprimeable number, because it can be changed into a prime (40503361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80920 + ... + 81418.

It is an arithmetic number, because the mean of its divisors is an integer number (2844000).

Almost surely, 2^40503331 is an apocalyptic number.

40503331 is a deficient number, since it is larger than the sum of its proper divisors (5000669).

40503331 is a wasteful number, since it uses less digits than its factorization.

40503331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714.

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 40503331 is about 6364.2227333744. Note that the first 3 decimals coincide. The cubic root of 40503331 is about 343.4236874292.

Adding to 40503331 its reverse (13330504), we get a palindrome (53833835).

It can be divided in two parts, 4050 and 3331, that added together give a triangular number (7381 = T₁₂₁).

The spelling of 40503331 in words is "forty million, five hundred three thousand, three hundred thirty-one".