1021023313243 has 8 divisors (see below), whose sum is σ = 1036374609168. Its totient is φ = 1005675315744.

The previous prime is 1021023313237. The next prime is 1021023313273. The reversal of 1021023313243 is 3423133201201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1021023313243 - 2²⁹ = 1020486442331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021023313273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197296 + ... + 1442557.

It is an arithmetic number, because the mean of its divisors is an integer number (129546826146).

Almost surely, 2^{1021023313243} is an apocalyptic number.

1021023313243 is a deficient number, since it is larger than the sum of its proper divisors (15351295925).

1021023313243 is an equidigital number, since it uses as much as digits as its factorization.

1021023313243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1649213.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 1021023313243 its reverse (3423133201201), we get a palindrome (4444156514444).

The spelling of 1021023313243 in words is "one trillion, twenty-one billion, twenty-three million, three hundred thirteen thousand, two hundred forty-three".