1021353013 has 4 divisors (see below), whose sum is σ = 1081432620. Its totient is φ = 961273408.

The previous prime is 1021353007. The next prime is 1021353017. The reversal of 1021353013 is 3103531201.

1021353013 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 307020484 + 714332529 = 17522^2 + 26727^2 .

It is a cyclic number.

It is not a de Polignac number, because 1021353013 - 2²⁹ = 484482101 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 (1021353017) 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, 30039778 + ... + 30039811.

It is an arithmetic number, because the mean of its divisors is an integer number (270358155).

Almost surely, 2^1021353013 is an apocalyptic number.

It is an amenable number.

1021353013 is a deficient number, since it is larger than the sum of its proper divisors (60079607).

1021353013 is an equidigital number, since it uses as much as digits as its factorization.

1021353013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60079606.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 1021353013 is about 31958.6140656944. The cubic root of 1021353013 is about 1007.0676023195.

Adding to 1021353013 its reverse (3103531201), we get a palindrome (4124884214).

The spelling of 1021353013 in words is "one billion, twenty-one million, three hundred fifty-three thousand, thirteen".