201397 has 4 divisors (see below), whose sum is σ = 230176. Its totient is φ = 172620.

The previous prime is 201389. The next prime is 201401. The reversal of 201397 is 793102.

201397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 201397 - 2³ = 201389 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 (201307) 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, 14379 + ... + 14392.

It is an arithmetic number, because the mean of its divisors is an integer number (57544).

2²⁰¹³⁹⁷ is an apocalyptic number.

It is an amenable number.

201397 is a deficient number, since it is larger than the sum of its proper divisors (28779).

201397 is an equidigital number, since it uses as much as digits as its factorization.

201397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28778.

The product of its (nonzero) digits is 378, while the sum is 22.

The square root of 201397 is about 448.7727710100. The cubic root of 201397 is about 58.6162007182.

Adding to 201397 its reverse (793102), we get a palindrome (994499).

It can be divided in two parts, 201 and 397, that multiplied together give a palindrome (79797).

The spelling of 201397 in words is "two hundred one thousand, three hundred ninety-seven".