201000312 has 64 divisors (see below), whose sum is σ = 582624000. Its totient is φ = 64085472.

The previous prime is 201000301. The next prime is 201000313. The reversal of 201000312 is 213000102.

It is a happy number.

It is a super-2 number, since 2×201000312² = 80802250848194688, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 201000294 and 201000303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201000313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15262 + ... + 25197.

It is an arithmetic number, because the mean of its divisors is an integer number (9103500).

Almost surely, 2^201000312 is an apocalyptic number.

It is an amenable number.

201000312 is an abundant number, since it is smaller than the sum of its proper divisors (381623688).

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

201000312 is a wasteful number, since it uses less digits than its factorization.

201000312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40497 (or 40487 counting only the distinct ones).

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

The square root of 201000312 is about 14177.4578821452. The cubic root of 201000312 is about 585.7769033533.

Adding to 201000312 its reverse (213000102), we get a palindrome (414000414).

The spelling of 201000312 in words is "two hundred one million, three hundred twelve", and thus it is an aban number.