201317399 has 4 divisors (see below), whose sum is σ = 201973464. Its totient is φ = 200661336.

The previous prime is 201317393. The next prime is 201317401. The reversal of 201317399 is 993713102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 993713102 = 2 ⋅496856551.

It is a cyclic number.

It is not a de Polignac number, because 201317399 - 2²⁴ = 184540183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201317393) 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, 327572 + ... + 328185.

It is an arithmetic number, because the mean of its divisors is an integer number (50493366).

Almost surely, 2^201317399 is an apocalyptic number.

201317399 is a deficient number, since it is larger than the sum of its proper divisors (656065).

201317399 is an equidigital number, since it uses as much as digits as its factorization.

201317399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656064.

The product of its (nonzero) digits is 10206, while the sum is 35.

The square root of 201317399 is about 14188.6362628690. The cubic root of 201317399 is about 586.0847712904.

The spelling of 201317399 in words is "two hundred one million, three hundred seventeen thousand, three hundred ninety-nine".