1020043313 has 4 divisors (see below), whose sum is σ = 1052947968. Its totient is φ = 987138660.

The previous prime is 1020043289. The next prime is 1020043327. The reversal of 1020043313 is 3133400201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1020043313 - 2¹⁴ = 1020026929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020043291 and 1020043300.

It is not an unprimeable number, because it can be changed into a prime (1020043363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16452281 + ... + 16452342.

It is an arithmetic number, because the mean of its divisors is an integer number (263236992).

Almost surely, 2^1020043313 is an apocalyptic number.

It is an amenable number.

1020043313 is a deficient number, since it is larger than the sum of its proper divisors (32904655).

1020043313 is an equidigital number, since it uses as much as digits as its factorization.

1020043313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32904654.

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

The square root of 1020043313 is about 31938.1169294622. The cubic root of 1020043313 is about 1006.6369576752.

Adding to 1020043313 its reverse (3133400201), we get a palindrome (4153443514).

The spelling of 1020043313 in words is "one billion, twenty million, forty-three thousand, three hundred thirteen".