210140140323 has 4 divisors (see below), whose sum is σ = 280186853768. Its totient is φ = 140093426880.

The previous prime is 210140140321. The next prime is 210140140333. The reversal of 210140140323 is 323041041012.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 210140140323 - 2¹ = 210140140321 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 210140140323.

It is not an unprimeable number, because it can be changed into a prime (210140140321) 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, 35023356718 + ... + 35023356723.

It is an arithmetic number, because the mean of its divisors is an integer number (70046713442).

Almost surely, 2^210140140323 is an apocalyptic number.

210140140323 is a deficient number, since it is larger than the sum of its proper divisors (70046713445).

210140140323 is an equidigital number, since it uses as much as digits as its factorization.

210140140323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70046713444.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 210140140323 its reverse (323041041012), we get a palindrome (533181181335).

The spelling of 210140140323 in words is "two hundred ten billion, one hundred forty million, one hundred forty thousand, three hundred twenty-three".