20310201 has 6 divisors (see below), whose sum is σ = 29336970. Its totient is φ = 13540128.

The previous prime is 20310197. The next prime is 20310209. The reversal of 20310201 is 10201302.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 20034576 + 275625 = 4476^2 + 525^2 .

It is not a de Polignac number, because 20310201 - 2² = 20310197 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 2256689 = 20310201 / (2 + 0 + 3 + 1 + 0 + 2 + 0 + 1).

It is not an unprimeable number, because it can be changed into a prime (20310209) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1128336 + ... + 1128353.

It is an arithmetic number, because the mean of its divisors is an integer number (4889495).

Almost surely, 2^20310201 is an apocalyptic number.

It is an amenable number.

20310201 is a deficient number, since it is larger than the sum of its proper divisors (9026769).

20310201 is a wasteful number, since it uses less digits than its factorization.

20310201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2256695 (or 2256692 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 20310201 is about 4506.6840359626. The cubic root of 20310201 is about 272.8379265831.

Adding to 20310201 its reverse (10201302), we get a palindrome (30511503).

It can be divided in two parts, 203 and 10201, that added together give a square (10404 = 102²).

The spelling of 20310201 in words is "twenty million, three hundred ten thousand, two hundred one".