312220002 has 16 divisors (see below), whose sum is σ = 639670752. Its totient is φ = 101534880.

The previous prime is 312220001. The next prime is 312220019. The reversal of 312220002 is 200022213.

It is a self number, because there is not a number n which added to its sum of digits gives 312220002.

It is not an unprimeable number, because it can be changed into a prime (312220001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 634348 + ... + 634839.

It is an arithmetic number, because the mean of its divisors is an integer number (39979422).

Almost surely, 2^312220002 is an apocalyptic number.

312220002 is an abundant number, since it is smaller than the sum of its proper divisors (327450750).

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

312220002 is a wasteful number, since it uses less digits than its factorization.

312220002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1269233.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 312220002 is about 17669.7482155236. The cubic root of 312220002 is about 678.4016685190.

Adding to 312220002 its reverse (200022213), we get a palindrome (512242215).

The spelling of 312220002 in words is "three hundred twelve million, two hundred twenty thousand, two".