201388117 has 4 divisors (see below), whose sum is σ = 230157856. Its totient is φ = 172618380.

The previous prime is 201388111. The next prime is 201388123. The reversal of 201388117 is 711883102.

It is a happy number.

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.

It is an interprime number because it is at equal distance from previous prime (201388111) and next prime (201388123).

It is a cyclic number.

It is not a de Polignac number, because 201388117 - 2¹¹ = 201386069 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 (201388111) 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, 14384859 + ... + 14384872.

It is an arithmetic number, because the mean of its divisors is an integer number (57539464).

Almost surely, 2^201388117 is an apocalyptic number.

It is an amenable number.

201388117 is a deficient number, since it is larger than the sum of its proper divisors (28769739).

201388117 is an equidigital number, since it uses as much as digits as its factorization.

201388117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28769738.

The product of its (nonzero) digits is 2688, while the sum is 31.

The square root of 201388117 is about 14191.1281087868. The cubic root of 201388117 is about 586.1533891229.

The spelling of 201388117 in words is "two hundred one million, three hundred eighty-eight thousand, one hundred seventeen".