210320321023 has 4 divisors (see below), whose sum is σ = 213459430360. Its totient is φ = 207181211688.

The previous prime is 210320321011. The next prime is 210320321033. The reversal of 210320321023 is 320123023012.

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 210320321023 - 2³⁷ = 72881367551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210320321033) 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, 1569554568 + ... + 1569554701.

It is an arithmetic number, because the mean of its divisors is an integer number (53364857590).

Almost surely, 2^210320321023 is an apocalyptic number.

210320321023 is a deficient number, since it is larger than the sum of its proper divisors (3139109337).

210320321023 is an equidigital number, since it uses as much as digits as its factorization.

210320321023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3139109336.

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

Adding to 210320321023 its reverse (320123023012), we get a palindrome (530443344035).

The spelling of 210320321023 in words is "two hundred ten billion, three hundred twenty million, three hundred twenty-one thousand, twenty-three".