1020343013 has 4 divisors (see below), whose sum is σ = 1020518880. Its totient is φ = 1020167148.

The previous prime is 1020343007. The next prime is 1020343033. The reversal of 1020343013 is 3103430201.

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 1020343013 - 2²⁸ = 751907557 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020342982 and 1020343000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020343003) 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, 78923 + ... + 90936.

It is an arithmetic number, because the mean of its divisors is an integer number (255129720).

Almost surely, 2^1020343013 is an apocalyptic number.

It is an amenable number.

1020343013 is a deficient number, since it is larger than the sum of its proper divisors (175867).

1020343013 is an equidigital number, since it uses as much as digits as its factorization.

1020343013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175866.

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

The square root of 1020343013 is about 31942.8084707654. The cubic root of 1020343013 is about 1006.7355350430.

Adding to 1020343013 its reverse (3103430201), we get a palindrome (4123773214).

The spelling of 1020343013 in words is "one billion, twenty million, three hundred forty-three thousand, thirteen".