1003202001 has 6 divisors (see below), whose sum is σ = 1449069570. Its totient is φ = 668801328.

The previous prime is 1003201987. The next prime is 1003202003. The reversal of 1003202001 is 1002023001.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 934891776 + 68310225 = 30576^2 + 8265^2 .

It is not a de Polignac number, because 1003202001 - 2⁷ = 1003201873 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: 111466889 = 1003202001 / (1 + 0 + 0 + 3 + 2 + 0 + 2 + 0 + 0 + 1).

It is not an unprimeable number, because it can be changed into a prime (1003202003) 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, 55733436 + ... + 55733453.

It is an arithmetic number, because the mean of its divisors is an integer number (241511595).

Almost surely, 2^1003202001 is an apocalyptic number.

It is an amenable number.

1003202001 is a deficient number, since it is larger than the sum of its proper divisors (445867569).

1003202001 is a wasteful number, since it uses less digits than its factorization.

1003202001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111466895 (or 111466892 counting only the distinct ones).

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

The square root of 1003202001 is about 31673.3642197983. The cubic root of 1003202001 is about 1001.0661964877.

Adding to 1003202001 its reverse (1002023001), we get a palindrome (2005225002).

The spelling of 1003202001 in words is "one billion, three million, two hundred two thousand, one".