201006397 has 2 divisors, whose sum is σ = 201006398. Its totient is φ = 201006396.

The previous prime is 201006373. The next prime is 201006427. The reversal of 201006397 is 793600102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 176066361 + 24940036 = 13269^2 + 4994^2 .

It is a cyclic number.

It is not a de Polignac number, because 201006397 - 2¹⁹ = 200482109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201006307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100503198 + 100503199.

It is an arithmetic number, because the mean of its divisors is an integer number (100503199).

Almost surely, 2^201006397 is an apocalyptic number.

It is an amenable number.

201006397 is a deficient number, since it is larger than the sum of its proper divisors (1).

201006397 is an equidigital number, since it uses as much as digits as its factorization.

201006397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 201006397 is about 14177.6724817581. The cubic root of 201006397 is about 585.7828144826.

Adding to 201006397 its reverse (793600102), we get a palindrome (994606499).

The spelling of 201006397 in words is "two hundred one million, six thousand, three hundred ninety-seven".