140243323 has 4 divisors (see below), whose sum is σ = 152992728. Its totient is φ = 127493920.

The previous prime is 140243321. The next prime is 140243371. The reversal of 140243323 is 323342041.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 323342041 = 11 ⋅29394731.

It is a cyclic number.

It is not a de Polignac number, because 140243323 - 2¹ = 140243321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140243294 and 140243303.

It is not an unprimeable number, because it can be changed into a prime (140243321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6374686 + ... + 6374707.

It is an arithmetic number, because the mean of its divisors is an integer number (38248182).

Almost surely, 2^140243323 is an apocalyptic number.

140243323 is a deficient number, since it is larger than the sum of its proper divisors (12749405).

140243323 is a wasteful number, since it uses less digits than its factorization.

140243323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12749404.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 140243323 is about 11842.4373758108. The cubic root of 140243323 is about 519.5500582753.

Adding to 140243323 its reverse (323342041), we get a palindrome (463585364).

The spelling of 140243323 in words is "one hundred forty million, two hundred forty-three thousand, three hundred twenty-three".