1002023321023 has 4 divisors (see below), whose sum is σ = 1029105032440. Its totient is φ = 974941609608.

The previous prime is 1002023321011. The next prime is 1002023321059. The reversal of 1002023321023 is 3201233202001.

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 1002023321023 - 2²¹ = 1002021223871 is a prime.

It is a super-2 number, since 2×1002023321023² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002023321723) 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, 13540855653 + ... + 13540855726.

It is an arithmetic number, because the mean of its divisors is an integer number (257276258110).

Almost surely, 2^{1002023321023} is an apocalyptic number.

1002023321023 is a deficient number, since it is larger than the sum of its proper divisors (27081711417).

1002023321023 is an equidigital number, since it uses as much as digits as its factorization.

1002023321023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27081711416.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 1002023321023 its reverse (3201233202001), we get a palindrome (4203256523024).

The spelling of 1002023321023 in words is "one trillion, two billion, twenty-three million, three hundred twenty-one thousand, twenty-three".