201312312 has 16 divisors (see below), whose sum is σ = 503280840. Its totient is φ = 67104096.

The previous prime is 201312299. The next prime is 201312341. The reversal of 201312312 is 213213102.

It is a junction number, because it is equal to n+sod(n) for n = 201312291 and 201312300.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4193983 + ... + 4194030.

Almost surely, 2^201312312 is an apocalyptic number.

It is an amenable number.

201312312 is an abundant number, since it is smaller than the sum of its proper divisors (301968528).

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

201312312 is a wasteful number, since it uses less digits than its factorization.

201312312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8388022 (or 8388018 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 201312312 is about 14188.4569985605. The cubic root of 201312312 is about 586.0798347435.

Adding to 201312312 its reverse (213213102), we get a palindrome (414525414).

The spelling of 201312312 in words is "two hundred one million, three hundred twelve thousand, three hundred twelve".