140323403 has 4 divisors (see below), whose sum is σ = 153080088. Its totient is φ = 127566720.

The previous prime is 140323399. The next prime is 140323427. The reversal of 140323403 is 304323041.

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

It is a cyclic number.

It is not a de Polignac number, because 140323403 - 2² = 140323399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140313403) 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, 6378326 + ... + 6378347.

It is an arithmetic number, because the mean of its divisors is an integer number (38270022).

Almost surely, 2^140323403 is an apocalyptic number.

140323403 is a deficient number, since it is larger than the sum of its proper divisors (12756685).

140323403 is a wasteful number, since it uses less digits than its factorization.

140323403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12756684.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 140323403 is about 11845.8179540292. The cubic root of 140323403 is about 519.6489284657.

Adding to 140323403 its reverse (304323041), we get a palindrome (444646444).

The spelling of 140323403 in words is "one hundred forty million, three hundred twenty-three thousand, four hundred three".