40323321 has 12 divisors (see below), whose sum is σ = 59484672. Its totient is φ = 26309976.

The previous prime is 40323307. The next prime is 40323329. The reversal of 40323321 is 12332304.

It is not a de Polignac number, because 40323321 - 2⁵ = 40323289 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40323294 and 40323303.

It is not an unprimeable number, because it can be changed into a prime (40323329) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47241 + ... + 48086.

It is an arithmetic number, because the mean of its divisors is an integer number (4957056).

Almost surely, 2^40323321 is an apocalyptic number.

It is an amenable number.

40323321 is a deficient number, since it is larger than the sum of its proper divisors (19161351).

40323321 is a wasteful number, since it uses less digits than its factorization.

40323321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95380 (or 95377 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 40323321 is about 6350.0646453402. The cubic root of 40323321 is about 342.9141696066.

Adding to 40323321 its reverse (12332304), we get a palindrome (52655625).

The spelling of 40323321 in words is "forty million, three hundred twenty-three thousand, three hundred twenty-one".