140323520023 has 4 divisors (see below), whose sum is σ = 143309126880. Its totient is φ = 137337913168.

The previous prime is 140323519949. The next prime is 140323520047. The reversal of 140323520023 is 320025323041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320025323041 = 2459 ⋅130144499.

It is a cyclic number.

It is not a de Polignac number, because 140323520023 - 2¹⁷ = 140323388951 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 140323520023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140323526023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1492803358 + ... + 1492803451.

It is an arithmetic number, because the mean of its divisors is an integer number (35827281720).

Almost surely, 2^140323520023 is an apocalyptic number.

140323520023 is a deficient number, since it is larger than the sum of its proper divisors (2985606857).

140323520023 is an equidigital number, since it uses as much as digits as its factorization.

140323520023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2985606856.

The product of its (nonzero) digits is 4320, while the sum is 25.

Adding to 140323520023 its reverse (320025323041), we get a palindrome (460348843064).

The spelling of 140323520023 in words is "one hundred forty billion, three hundred twenty-three million, five hundred twenty thousand, twenty-three".