200115391 has 8 divisors (see below), whose sum is σ = 240740480. Its totient is φ = 162499608.

The previous prime is 200115371. The next prime is 200115401. The reversal of 200115391 is 193511002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 200115391 - 2⁹ = 200114879 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 (200115361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 752181 + ... + 752446.

It is an arithmetic number, because the mean of its divisors is an integer number (30092560).

Almost surely, 2^200115391 is an apocalyptic number.

200115391 is a deficient number, since it is larger than the sum of its proper divisors (40625089).

200115391 is a wasteful number, since it uses less digits than its factorization.

200115391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1504653.

The product of its (nonzero) digits is 270, while the sum is 22.

The square root of 200115391 is about 14146.2147233810. The cubic root of 200115391 is about 584.9159944634.

Adding to 200115391 its reverse (193511002), we get a palindrome (393626393).

The spelling of 200115391 in words is "two hundred million, one hundred fifteen thousand, three hundred ninety-one".