201309897 has 8 divisors (see below), whose sum is σ = 269225440. Its totient is φ = 133800480.

The previous prime is 201309863. The next prime is 201309917. The reversal of 201309897 is 798903102.

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

It is not a de Polignac number, because 201309897 - 2¹⁵ = 201277129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201309827) 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, 100372 + ... + 102357.

It is an arithmetic number, because the mean of its divisors is an integer number (33653180).

Almost surely, 2^201309897 is an apocalyptic number.

It is an amenable number.

201309897 is a deficient number, since it is larger than the sum of its proper divisors (67915543).

201309897 is a wasteful number, since it uses less digits than its factorization.

201309897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203063.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 201309897 is about 14188.3718939137. The cubic root of 201309897 is about 586.0774911404.

The spelling of 201309897 in words is "two hundred one million, three hundred nine thousand, eight hundred ninety-seven".