312213412 has 24 divisors (see below), whose sum is σ = 633225600. Its totient is φ = 131920320.

The previous prime is 312213403. The next prime is 312213457. The reversal of 312213412 is 214312213.

It is a happy number.

312213412 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 312213412.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76537 + ... + 80512.

It is an arithmetic number, because the mean of its divisors is an integer number (26384400).

Almost surely, 2^312213412 is an apocalyptic number.

It is an amenable number.

312213412 is an abundant number, since it is smaller than the sum of its proper divisors (321012188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

312213412 is a wasteful number, since it uses less digits than its factorization.

312213412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157131 (or 157129 counting only the distinct ones).

The product of its digits is 288, while the sum is 19.

The square root of 312213412 is about 17669.5617376323. The cubic root of 312213412 is about 678.3968954974.

Adding to 312213412 its reverse (214312213), we get a palindrome (526525625).

The spelling of 312213412 in words is "three hundred twelve million, two hundred thirteen thousand, four hundred twelve".