201312313 has 4 divisors (see below), whose sum is σ = 201525840. Its totient is φ = 201098788.

The previous prime is 201312299. The next prime is 201312341. The reversal of 201312313 is 313213102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 313213102 = 2 ⋅156606551.

It is a cyclic number.

It is not a de Polignac number, because 201312313 - 2²¹ = 199215161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201312413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105343 + ... + 107236.

It is an arithmetic number, because the mean of its divisors is an integer number (50381460).

Almost surely, 2^201312313 is an apocalyptic number.

It is an amenable number.

201312313 is a deficient number, since it is larger than the sum of its proper divisors (213527).

201312313 is an equidigital number, since it uses as much as digits as its factorization.

201312313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213526.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 201312313 is about 14188.4570338004. The cubic root of 201312313 is about 586.0798357139.

Adding to 201312313 its reverse (313213102), we get a palindrome (514525415).

The spelling of 201312313 in words is "two hundred one million, three hundred twelve thousand, three hundred thirteen".