140349361 has 2 divisors, whose sum is σ = 140349362. Its totient is φ = 140349360.

The previous prime is 140349359. The next prime is 140349373. The reversal of 140349361 is 163943041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128958736 + 11390625 = 11356^2 + 3375^2 .

It is a cyclic number.

It is not a de Polignac number, because 140349361 - 2¹ = 140349359 is a prime.

Together with 140349359, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (140349761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70174680 + 70174681.

It is an arithmetic number, because the mean of its divisors is an integer number (70174681).

Almost surely, 2^140349361 is an apocalyptic number.

It is an amenable number.

140349361 is a deficient number, since it is larger than the sum of its proper divisors (1).

140349361 is an equidigital number, since it uses as much as digits as its factorization.

140349361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 140349361 is about 11846.9135643002. The cubic root of 140349361 is about 519.6809692489.

The spelling of 140349361 in words is "one hundred forty million, three hundred forty-nine thousand, three hundred sixty-one".