140320311 has 8 divisors (see below), whose sum is σ = 189886464. Its totient is φ = 92150520.

The previous prime is 140320267. The next prime is 140320331. The reversal of 140320311 is 113023041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 140320311 - 2¹¹ = 140318263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140320331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 348855 + ... + 349256.

It is an arithmetic number, because the mean of its divisors is an integer number (23735808).

Almost surely, 2^140320311 is an apocalyptic number.

140320311 is a deficient number, since it is larger than the sum of its proper divisors (49566153).

140320311 is an equidigital number, since it uses as much as digits as its factorization.

140320311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698181.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 140320311 is about 11845.6874431162. The cubic root of 140320311 is about 519.6451116486.

Adding to 140320311 its reverse (113023041), we get a palindrome (253343352).

The spelling of 140320311 in words is "one hundred forty million, three hundred twenty thousand, three hundred eleven".