312240022002 has 24 divisors (see below), whose sum is σ = 676646779536. Its totient is φ = 104060510136.

The previous prime is 312240021997. The next prime is 312240022009. The reversal of 312240022002 is 200220042213.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (312240022009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1525848 + ... + 1718339.

It is an arithmetic number, because the mean of its divisors is an integer number (28193615814).

Almost surely, 2^312240022002 is an apocalyptic number.

312240022002 is an abundant number, since it is smaller than the sum of its proper divisors (364406757534).

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

312240022002 is a wasteful number, since it uses less digits than its factorization.

312240022002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3249542 (or 3249539 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 312240022002 its reverse (200220042213), we get a palindrome (512460064215).

The spelling of 312240022002 in words is "three hundred twelve billion, two hundred forty million, twenty-two thousand, two".