1020020343 has 4 divisors (see below), whose sum is σ = 1360027128. Its totient is φ = 680013560.

The previous prime is 1020020333. The next prime is 1020020381. The reversal of 1020020343 is 3430200201.

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

It is a cyclic number.

It is not a de Polignac number, because 1020020343 - 2⁶ = 1020020279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020020303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170003388 + ... + 170003393.

It is an arithmetic number, because the mean of its divisors is an integer number (340006782).

Almost surely, 2^1020020343 is an apocalyptic number.

1020020343 is a deficient number, since it is larger than the sum of its proper divisors (340006785).

1020020343 is an equidigital number, since it uses as much as digits as its factorization.

1020020343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340006784.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 1020020343 is about 31937.7573257735. The cubic root of 1020020343 is about 1006.6294015829.

Adding to 1020020343 its reverse (3430200201), we get a palindrome (4450220544).

The spelling of 1020020343 in words is "one billion, twenty million, twenty thousand, three hundred forty-three".