140326217 has 4 divisors (see below), whose sum is σ = 140357316. Its totient is φ = 140295120.

The previous prime is 140326213. The next prime is 140326297. The reversal of 140326217 is 712623041.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 98089216 + 42237001 = 9904^2 + 6499^2 .

It is a cyclic number.

It is not a de Polignac number, because 140326217 - 2² = 140326213 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140326213) 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 in 3 ways as a sum of consecutive naturals, for example, 7334 + ... + 18287.

It is an arithmetic number, because the mean of its divisors is an integer number (35089329).

Almost surely, 2^140326217 is an apocalyptic number.

It is an amenable number.

140326217 is a deficient number, since it is larger than the sum of its proper divisors (31099).

140326217 is an equidigital number, since it uses as much as digits as its factorization.

140326217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31098.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 140326217 is about 11845.9367295288. The cubic root of 140326217 is about 519.6524020661.

Adding to 140326217 its reverse (712623041), we get a palindrome (852949258).

The spelling of 140326217 in words is "one hundred forty million, three hundred twenty-six thousand, two hundred seventeen".