1020200502323 has 4 divisors (see below), whose sum is σ = 1035427375560. Its totient is φ = 1004973629088.

The previous prime is 1020200502319. The next prime is 1020200502329. The reversal of 1020200502323 is 3232050020201.

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 1020200502323 - 2² = 1020200502319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020200502295 and 1020200502304.

It is not an unprimeable number, because it can be changed into a prime (1020200502329) 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, 7613436518 + ... + 7613436651.

It is an arithmetic number, because the mean of its divisors is an integer number (258856843890).

Almost surely, 2^{1020200502323} is an apocalyptic number.

1020200502323 is a deficient number, since it is larger than the sum of its proper divisors (15226873237).

1020200502323 is an equidigital number, since it uses as much as digits as its factorization.

1020200502323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15226873236.

The product of its (nonzero) digits is 720, while the sum is 20.

Adding to 1020200502323 its reverse (3232050020201), we get a palindrome (4252250522524).

The spelling of 1020200502323 in words is "one trillion, twenty billion, two hundred million, five hundred two thousand, three hundred twenty-three".