40321331 has 8 divisors (see below), whose sum is σ = 43279344. Its totient is φ = 37428480.

The previous prime is 40321313. The next prime is 40321373. The reversal of 40321331 is 13312304.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 40321331 - 2¹⁰ = 40320307 is a prime.

It is a super-2 number, since 2×40321331² = 3251619467223122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40321031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15005 + ... + 17486.

It is an arithmetic number, because the mean of its divisors is an integer number (5409918).

Almost surely, 2^40321331 is an apocalyptic number.

40321331 is a deficient number, since it is larger than the sum of its proper divisors (2958013).

40321331 is a wasteful number, since it uses less digits than its factorization.

40321331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32581.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 40321331 is about 6349.9079520888. The cubic root of 40321331 is about 342.9085284507.

Adding to 40321331 its reverse (13312304), we get a palindrome (53633635).

The spelling of 40321331 in words is "forty million, three hundred twenty-one thousand, three hundred thirty-one".