140320513 has 2 divisors, whose sum is σ = 140320514. Its totient is φ = 140320512.

The previous prime is 140320507. The next prime is 140320517. The reversal of 140320513 is 315023041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115089984 + 25230529 = 10728^2 + 5023^2 .

It is an emirp because it is prime and its reverse (315023041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140320513 - 2⁹ = 140320001 is a prime.

It is not a weakly prime, because it can be changed into another prime (140320517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70160256 + 70160257.

It is an arithmetic number, because the mean of its divisors is an integer number (70160257).

Almost surely, 2^140320513 is an apocalyptic number.

It is an amenable number.

140320513 is a deficient number, since it is larger than the sum of its proper divisors (1).

140320513 is an equidigital number, since it uses as much as digits as its factorization.

140320513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 140320513 is about 11845.6959694228. The cubic root of 140320513 is about 519.6453610025.

Adding to 140320513 its reverse (315023041), we get a palindrome (455343554).

The spelling of 140320513 in words is "one hundred forty million, three hundred twenty thousand, five hundred thirteen".