312222002 has 4 divisors (see below), whose sum is σ = 468333006. Its totient is φ = 156111000.

The previous prime is 312221999. The next prime is 312222019. The reversal of 312222002 is 200222213.

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

It can be written as a sum of positive squares in only one way, i.e., 259499881 + 52722121 = 16109^2 + 7261^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78055499 + ... + 78055502.

Almost surely, 2^312222002 is an apocalyptic number.

312222002 is a deficient number, since it is larger than the sum of its proper divisors (156111004).

312222002 is a wasteful number, since it uses less digits than its factorization.

312222002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156111003.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 312222002 is about 17669.8048093350. The cubic root of 312222002 is about 678.4031170707.

Adding to 312222002 its reverse (200222213), we get a palindrome (512444215).

The spelling of 312222002 in words is "three hundred twelve million, two hundred twenty-two thousand, two".