312100001 has 4 divisors (see below), whose sum is σ = 322862100. Its totient is φ = 301337904.

The previous prime is 312099961. The next prime is 312100013. The reversal of 312100001 is 100001213.

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

It can be written as a sum of positive squares in 2 ways, for example, as 250398976 + 61701025 = 15824^2 + 7855^2 .

It is a cyclic number.

It is not a de Polignac number, because 312100001 - 2¹⁰ = 312098977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312100031) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5381006 + ... + 5381063.

It is an arithmetic number, because the mean of its divisors is an integer number (80715525).

Almost surely, 2^312100001 is an apocalyptic number.

It is an amenable number.

312100001 is a deficient number, since it is larger than the sum of its proper divisors (10762099).

312100001 is a wasteful number, since it uses less digits than its factorization.

312100001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10762098.

The product of its (nonzero) digits is 6, while the sum is 8.

The square root of 312100001 is about 17666.3522267615. The cubic root of 312100001 is about 678.3147433700.

Adding to 312100001 its reverse (100001213), we get a palindrome (412101214).

The spelling of 312100001 in words is "three hundred twelve million, one hundred thousand, one".