140813 has 2 divisors, whose sum is σ = 140814. Its totient is φ = 140812.

The previous prime is 140797. The next prime is 140827. The reversal of 140813 is 318041.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 114244 + 26569 = 338^2 + 163^2 .

It is a cyclic number.

It is not a de Polignac number, because 140813 - 2⁴ = 140797 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 140791 and 140800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70406 + 70407.

It is an arithmetic number, because the mean of its divisors is an integer number (70407).

2¹⁴⁰⁸¹³ is an apocalyptic number.

It is an amenable number.

140813 is a deficient number, since it is larger than the sum of its proper divisors (1).

140813 is an equidigital number, since it uses as much as digits as its factorization.

140813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 140813 is about 375.2505829443. The cubic root of 140813 is about 52.0252589317.

Adding to 140813 its reverse (318041), we get a palindrome (458854).

The spelling of 140813 in words is "one hundred forty thousand, eight hundred thirteen".