140431013444321 has 4 divisors (see below), whose sum is σ = 140646068595732. Its totient is φ = 140215958292912.

The previous prime is 140431013444317. The next prime is 140431013444329. The reversal of 140431013444321 is 123444310134041.

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 83365665030400 + 57065348413921 = 9130480^2 + 7554161^2 .

It is a cyclic number.

It is not a de Polignac number, because 140431013444321 - 2² = 140431013444317 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (140431013444329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107527574726 + ... + 107527576031.

It is an arithmetic number, because the mean of its divisors is an integer number (35161517148933).

Almost surely, 2^{140431013444321} is an apocalyptic number.

It is an amenable number.

140431013444321 is a deficient number, since it is larger than the sum of its proper divisors (215055151411).

140431013444321 is an equidigital number, since it uses as much as digits as its factorization.

140431013444321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215055151410.

The product of its (nonzero) digits is 55296, while the sum is 35.

Adding to 140431013444321 its reverse (123444310134041), we get a palindrome (263875323578362).

The spelling of 140431013444321 in words is "one hundred forty trillion, four hundred thirty-one billion, thirteen million, four hundred forty-four thousand, three hundred twenty-one".