401331212 has 12 divisors (see below), whose sum is σ = 718663176. Its totient is φ = 195998880.

The previous prime is 401331199. The next prime is 401331221. The reversal of 401331212 is 212133104.

It is a super-3 number, since 3×401331212³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1166489 + ... + 1166832.

It is an arithmetic number, because the mean of its divisors is an integer number (59888598).

Almost surely, 2^401331212 is an apocalyptic number.

It is an amenable number.

401331212 is a deficient number, since it is larger than the sum of its proper divisors (317331964).

401331212 is a wasteful number, since it uses less digits than its factorization.

401331212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2333368 (or 2333366 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 401331212 is about 20033.2526565209. The cubic root of 401331212 is about 737.6227658122.

Adding to 401331212 its reverse (212133104), we get a palindrome (613464316).

The spelling of 401331212 in words is "four hundred one million, three hundred thirty-one thousand, two hundred twelve".