10002020323 has 4 divisors (see below), whose sum is σ = 10002494440. Its totient is φ = 10001546208.

The previous prime is 10002020317. The next prime is 10002020333. The reversal of 10002020323 is 32302020001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32302020001 = 3253 ⋅9929917.

It is a cyclic number.

It is not a de Polignac number, because 10002020323 - 2⁵ = 10002020291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10002020333) 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, 203865 + ... + 248122.

It is an arithmetic number, because the mean of its divisors is an integer number (2500623610).

Almost surely, 2^10002020323 is an apocalyptic number.

10002020323 is a deficient number, since it is larger than the sum of its proper divisors (474117).

10002020323 is an equidigital number, since it uses as much as digits as its factorization.

10002020323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474116.

The product of its (nonzero) digits is 72, while the sum is 13.

Adding to 10002020323 its reverse (32302020001), we get a palindrome (42304040324).

The spelling of 10002020323 in words is "ten billion, two million, twenty thousand, three hundred twenty-three".