312200001 has 20 divisors (see below), whose sum is σ = 490921200. Its totient is φ = 197177976.

The previous prime is 312199981. The next prime is 312200003. The reversal of 312200001 is 100002213.

It is a happy number.

It is not a de Polignac number, because 312200001 - 2⁷ = 312199873 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (312200003) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 99891 + ... + 102968.

It is an arithmetic number, because the mean of its divisors is an integer number (24546060).

Almost surely, 2^312200001 is an apocalyptic number.

It is an amenable number.

312200001 is a deficient number, since it is larger than the sum of its proper divisors (178721199).

312200001 is a wasteful number, since it uses less digits than its factorization.

312200001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202890 (or 202881 counting only the distinct ones).

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

The square root of 312200001 is about 17669.1822391417. The cubic root of 312200001 is about 678.3871819375.

Adding to 312200001 its reverse (100002213), we get a palindrome (412202214).

The spelling of 312200001 in words is "three hundred twelve million, two hundred thousand, one".