140634317 has 2 divisors, whose sum is σ = 140634318. Its totient is φ = 140634316.

The previous prime is 140634313. The next prime is 140634331. The reversal of 140634317 is 713436041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 138980521 + 1653796 = 11789^2 + 1286^2 .

It is an emirp because it is prime and its reverse (713436041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140634317 - 2² = 140634313 is a prime.

It is a super-2 number, since 2×140634317² = 39556022236112978, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 140634317.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140634313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70317158 + 70317159.

It is an arithmetic number, because the mean of its divisors is an integer number (70317159).

Almost surely, 2^140634317 is an apocalyptic number.

It is an amenable number.

140634317 is a deficient number, since it is larger than the sum of its proper divisors (1).

140634317 is an equidigital number, since it uses as much as digits as its factorization.

140634317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 140634317 is about 11858.9340583376. The cubic root of 140634317 is about 520.0324400373.

The spelling of 140634317 in words is "one hundred forty million, six hundred thirty-four thousand, three hundred seventeen".