40313221 has 8 divisors (see below), whose sum is σ = 43635200. Its totient is φ = 37022832.

The previous prime is 40313201. The next prime is 40313243. The reversal of 40313221 is 12231304.

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 40313221 - 2¹⁵ = 40280453 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40313195 and 40313204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40313201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5205 + ... + 10378.

It is an arithmetic number, because the mean of its divisors is an integer number (5454400).

Almost surely, 2^40313221 is an apocalyptic number.

It is an amenable number.

40313221 is a deficient number, since it is larger than the sum of its proper divisors (3321979).

40313221 is a wasteful number, since it uses less digits than its factorization.

40313221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15795.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 40313221 is about 6349.2693280408. The cubic root of 40313221 is about 342.8855366945.

Adding to 40313221 its reverse (12231304), we get a palindrome (52544525).

The spelling of 40313221 in words is "forty million, three hundred thirteen thousand, two hundred twenty-one".