1020003202313 has 4 divisors (see below), whose sum is σ = 1027448481300. Its totient is φ = 1012557923328.

The previous prime is 1020003202259. The next prime is 1020003202319. The reversal of 1020003202313 is 3132023000201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 538877850889 + 481125351424 = 734083^2 + 693632^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020003202313 - 2⁶ = 1020003202249 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020003202291 and 1020003202300.

It is not an unprimeable number, because it can be changed into a prime (1020003202319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3722639288 + ... + 3722639561.

It is an arithmetic number, because the mean of its divisors is an integer number (256862120325).

Almost surely, 2^{1020003202313} is an apocalyptic number.

It is an amenable number.

1020003202313 is a deficient number, since it is larger than the sum of its proper divisors (7445278987).

1020003202313 is an equidigital number, since it uses as much as digits as its factorization.

1020003202313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7445278986.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 1020003202313 its reverse (3132023000201), we get a palindrome (4152026202514).

The spelling of 1020003202313 in words is "one trillion, twenty billion, three million, two hundred two thousand, three hundred thirteen".