1020304013 has 4 divisors (see below), whose sum is σ = 1055486940. Its totient is φ = 985121088.

The previous prime is 1020303929. The next prime is 1020304027. The reversal of 1020304013 is 3104030201.

1020304013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 172213129 + 848090884 = 13123^2 + 29122^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020304013 - 2¹⁶ = 1020238477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020304213) 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, 17591420 + ... + 17591477.

It is an arithmetic number, because the mean of its divisors is an integer number (263871735).

Almost surely, 2^1020304013 is an apocalyptic number.

It is an amenable number.

1020304013 is a deficient number, since it is larger than the sum of its proper divisors (35182927).

1020304013 is an equidigital number, since it uses as much as digits as its factorization.

1020304013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35182926.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1020304013 is about 31942.1979988854. The cubic root of 1020304013 is about 1006.7227082500.

Adding to 1020304013 its reverse (3104030201), we get a palindrome (4124334214).

The spelling of 1020304013 in words is "one billion, twenty million, three hundred four thousand, thirteen".