140136317 has 2 divisors, whose sum is σ = 140136318. Its totient is φ = 140136316.

The previous prime is 140136313. The next prime is 140136331. The reversal of 140136317 is 713631041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83375161 + 56761156 = 9131^2 + 7534^2 .

It is an emirp because it is prime and its reverse (713631041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140136317 - 2² = 140136313 is a prime.

It is a super-4 number, since 4×140136317⁴ (a number of 34 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140136313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70068158 + 70068159.

It is an arithmetic number, because the mean of its divisors is an integer number (70068159).

Almost surely, 2^140136317 is an apocalyptic number.

It is an amenable number.

140136317 is a deficient number, since it is larger than the sum of its proper divisors (1).

140136317 is an equidigital number, since it uses as much as digits as its factorization.

140136317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 140136317 is about 11837.9186092826. The cubic root of 140136317 is about 519.4178853298.

Adding to 140136317 its reverse (713631041), we get a palindrome (853767358).

The spelling of 140136317 in words is "one hundred forty million, one hundred thirty-six thousand, three hundred seventeen".