201385997 has 4 divisors (see below), whose sum is σ = 211985280. Its totient is φ = 190786716.

The previous prime is 201385993. The next prime is 201386039. The reversal of 201385997 is 799583102.

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 a cyclic number.

It is not a de Polignac number, because 201385997 - 2² = 201385993 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201385991) 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, 5299613 + ... + 5299650.

It is an arithmetic number, because the mean of its divisors is an integer number (52996320).

Almost surely, 2^201385997 is an apocalyptic number.

It is an amenable number.

201385997 is a deficient number, since it is larger than the sum of its proper divisors (10599283).

201385997 is a wasteful number, since it uses less digits than its factorization.

201385997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10599282.

The product of its (nonzero) digits is 136080, while the sum is 44.

The square root of 201385997 is about 14191.0534140352. The cubic root of 201385997 is about 586.1513323158.

The spelling of 201385997 in words is "two hundred one million, three hundred eighty-five thousand, nine hundred ninety-seven".