40331212 has 6 divisors (see below), whose sum is σ = 70579628. Its totient is φ = 20165604.

The previous prime is 40331209. The next prime is 40331227. The reversal of 40331212 is 21213304.

It is a happy number.

It is a super-2 number, since 2×40331212² = 3253213322777888, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5041398 + ... + 5041405.

Almost surely, 2^40331212 is an apocalyptic number.

It is an amenable number.

40331212 is a deficient number, since it is larger than the sum of its proper divisors (30248416).

40331212 is a wasteful number, since it uses less digits than its factorization.

40331212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10082807 (or 10082805 counting only the distinct ones).

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

The square root of 40331212 is about 6350.6859472029. The cubic root of 40331212 is about 342.9365368055.

Adding to 40331212 its reverse (21213304), we get a palindrome (61544516).

The spelling of 40331212 in words is "forty million, three hundred thirty-one thousand, two hundred twelve".