201043697 has 4 divisors (see below), whose sum is σ = 201284160. Its totient is φ = 200803236.

The previous prime is 201043673. The next prime is 201043699. The reversal of 201043697 is 796340102.

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, and also an emirpimes, since its reverse is a distinct semiprime: 796340102 = 2 ⋅398170051.

It is a cyclic number.

It is not a de Polignac number, because 201043697 - 2⁸ = 201043441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201043699) 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, 118973 + ... + 120650.

It is an arithmetic number, because the mean of its divisors is an integer number (50321040).

Almost surely, 2^201043697 is an apocalyptic number.

It is an amenable number.

201043697 is a deficient number, since it is larger than the sum of its proper divisors (240463).

201043697 is an equidigital number, since it uses as much as digits as its factorization.

201043697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240462.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 201043697 is about 14178.9878693791. The cubic root of 201043697 is about 585.8190460784.

Adding to 201043697 its reverse (796340102), we get a palindrome (997383799).

The spelling of 201043697 in words is "two hundred one million, forty-three thousand, six hundred ninety-seven".