140240312404321 has 4 divisors (see below), whose sum is σ = 140240502945172. Its totient is φ = 140240121863472.

The previous prime is 140240312404277. The next prime is 140240312404349. The reversal of 140240312404321 is 123404213042041.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8721159891921 + 131519152512400 = 2953161^2 + 11468180^2 .

It is a cyclic number.

It is not a de Polignac number, because 140240312404321 - 2¹¹ = 140240312402273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140240312404391) 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, 94162110 + ... + 95639863.

It is an arithmetic number, because the mean of its divisors is an integer number (35060125736293).

Almost surely, 2^{140240312404321} is an apocalyptic number.

It is an amenable number.

140240312404321 is a deficient number, since it is larger than the sum of its proper divisors (190540851).

140240312404321 is an equidigital number, since it uses as much as digits as its factorization.

140240312404321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190540850.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 140240312404321 its reverse (123404213042041), we get a palindrome (263644525446362).

The spelling of 140240312404321 in words is "one hundred forty trillion, two hundred forty billion, three hundred twelve million, four hundred four thousand, three hundred twenty-one".