201331073 has 2 divisors, whose sum is σ = 201331074. Its totient is φ = 201331072.

The previous prime is 201331063. The next prime is 201331103. The reversal of 201331073 is 370133102.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113571649 + 87759424 = 10657^2 + 9368^2 .

It is a cyclic number.

It is not a de Polignac number, because 201331073 - 2⁴ = 201331057 is a prime.

It is not a weakly prime, because it can be changed into another prime (201331003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100665536 + 100665537.

It is an arithmetic number, because the mean of its divisors is an integer number (100665537).

Almost surely, 2^201331073 is an apocalyptic number.

It is an amenable number.

201331073 is a deficient number, since it is larger than the sum of its proper divisors (1).

201331073 is an equidigital number, since it uses as much as digits as its factorization.

201331073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 378, while the sum is 20.

The square root of 201331073 is about 14189.1181191785. The cubic root of 201331073 is about 586.0980404560.

Adding to 201331073 its reverse (370133102), we get a palindrome (571464175).

The spelling of 201331073 in words is "two hundred one million, three hundred thirty-one thousand, seventy-three".