40331222 has 4 divisors (see below), whose sum is σ = 60496836. Its totient is φ = 20165610.

The previous prime is 40331209. The next prime is 40331227. The reversal of 40331222 is 22213304.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 40331222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40331227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10082804 + ... + 10082807.

It is an arithmetic number, because the mean of its divisors is an integer number (15124209).

Almost surely, 2^40331222 is an apocalyptic number.

40331222 is a deficient number, since it is larger than the sum of its proper divisors (20165614).

40331222 is a wasteful number, since it uses less digits than its factorization.

40331222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20165613.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 40331222 is about 6350.6867345193. The cubic root of 40331222 is about 342.9365651488.

Adding to 40331222 its reverse (22213304), we get a palindrome (62544526).

The spelling of 40331222 in words is "forty million, three hundred thirty-one thousand, two hundred twenty-two".