312100002 has 24 divisors (see below), whose sum is σ = 698031360. Its totient is φ = 100677240.

The previous prime is 312099961. The next prime is 312100013. The reversal of 312100002 is 200001213.

It is a happy number.

It is a super-2 number, since 2×312100002² = 194812822496800008, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

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 in 11 ways as a sum of consecutive naturals, for example, 279102 + ... + 280217.

It is an arithmetic number, because the mean of its divisors is an integer number (29084640).

Almost surely, 2^312100002 is an apocalyptic number.

312100002 is an abundant number, since it is smaller than the sum of its proper divisors (385931358).

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

312100002 is a wasteful number, since it uses less digits than its factorization.

312100002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559358 (or 559355 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 312100002 is about 17666.3522550639. The cubic root of 312100002 is about 678.3147440945.

Adding to 312100002 its reverse (200001213), we get a palindrome (512101215).

The spelling of 312100002 in words is "three hundred twelve million, one hundred thousand, two".