140440313031457 has 2 divisors, whose sum is σ = 140440313031458. Its totient is φ = 140440313031456.

The previous prime is 140440313031437. The next prime is 140440313031503. The reversal of 140440313031457 is 754130313044041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122482008331281 + 17958304700176 = 11067159^2 + 4237724^2 .

It is a cyclic number.

It is not a de Polignac number, because 140440313031457 - 2³⁹ = 139890557217569 is a prime.

It is not a weakly prime, because it can be changed into another prime (140440313031407) 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 as a sum of consecutive naturals, namely, 70220156515728 + 70220156515729.

It is an arithmetic number, because the mean of its divisors is an integer number (70220156515729).

Almost surely, 2^{140440313031457} is an apocalyptic number.

It is an amenable number.

140440313031457 is a deficient number, since it is larger than the sum of its proper divisors (1).

140440313031457 is an equidigital number, since it uses as much as digits as its factorization.

140440313031457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 241920, while the sum is 40.

Adding to 140440313031457 its reverse (754130313044041), we get a palindrome (894570626075498).

The spelling of 140440313031457 in words is "one hundred forty trillion, four hundred forty billion, three hundred thirteen million, thirty-one thousand, four hundred fifty-seven".