140316643 has 2 divisors, whose sum is σ = 140316644. Its totient is φ = 140316642.

The previous prime is 140316613. The next prime is 140316679. The reversal of 140316643 is 346613041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 140316643 - 2¹³ = 140308451 is a prime.

It is not a weakly prime, because it can be changed into another prime (140316613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70158321 + 70158322.

It is an arithmetic number, because the mean of its divisors is an integer number (70158322).

Almost surely, 2^140316643 is an apocalyptic number.

140316643 is a deficient number, since it is larger than the sum of its proper divisors (1).

140316643 is an equidigital number, since it uses as much as digits as its factorization.

140316643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 140316643 is about 11845.5326178269. The cubic root of 140316643 is about 519.6405837347.

Adding to 140316643 its reverse (346613041), we get a palindrome (486929684).

The spelling of 140316643 in words is "one hundred forty million, three hundred sixteen thousand, six hundred forty-three".