1000320201 has 12 divisors (see below), whose sum is σ = 1447376112. Its totient is φ = 665740536.

The previous prime is 1000320193. The next prime is 1000320257. The reversal of 1000320201 is 1020230001.

It is a happy number.

It is not a de Polignac number, because 1000320201 - 2³ = 1000320193 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (1000320281) 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 in 11 ways as a sum of consecutive naturals, for example, 89391 + ... + 99956.

It is an arithmetic number, because the mean of its divisors is an integer number (120614676).

Almost surely, 2^1000320201 is an apocalyptic number.

It is an amenable number.

1000320201 is a deficient number, since it is larger than the sum of its proper divisors (447055911).

1000320201 is a wasteful number, since it uses less digits than its factorization.

1000320201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189940 (or 189937 counting only the distinct ones).

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

The square root of 1000320201 is about 31627.8390188138. The cubic root of 1000320201 is about 1000.1067222766.

Adding to 1000320201 its reverse (1020230001), we get a palindrome (2020550202).

It can be divided in two parts, 1000 and 320201, that added together give a triangular number (321201 = T₈₀₁).

The spelling of 1000320201 in words is "one billion, three hundred twenty thousand, two hundred one".