40433331 has 16 divisors (see below), whose sum is σ = 55838720. Its totient is φ = 25997760.

The previous prime is 40433299. The next prime is 40433347. The reversal of 40433331 is 13333404.

It is not a de Polignac number, because 40433331 - 2⁵ = 40433299 is a prime.

It is a super-2 number, since 2×40433331² = 3269708511511122, 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 = 40433298 and 40433307.

It is not an unprimeable number, because it can be changed into a prime (40433381) 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, 37506 + ... + 38568.

It is an arithmetic number, because the mean of its divisors is an integer number (3489920).

Almost surely, 2^40433331 is an apocalyptic number.

40433331 is a deficient number, since it is larger than the sum of its proper divisors (15405389).

40433331 is a wasteful number, since it uses less digits than its factorization.

40433331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1506.

The product of its (nonzero) digits is 1296, while the sum is 21.

The square root of 40433331 is about 6358.7208619344. The cubic root of 40433331 is about 343.2257323499.

Adding to 40433331 its reverse (13333404), we get a palindrome (53766735).

The spelling of 40433331 in words is "forty million, four hundred thirty-three thousand, three hundred thirty-one".