140823211 has 4 divisors (see below), whose sum is σ = 141637392. Its totient is φ = 140009032.

The previous prime is 140823209. The next prime is 140823229. The reversal of 140823211 is 112328041.

It is a happy number.

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 140823211 - 2¹ = 140823209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140823271) 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, 406831 + ... + 407176.

It is an arithmetic number, because the mean of its divisors is an integer number (35409348).

Almost surely, 2^140823211 is an apocalyptic number.

140823211 is a deficient number, since it is larger than the sum of its proper divisors (814181).

140823211 is an equidigital number, since it uses as much as digits as its factorization.

140823211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814180.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 140823211 is about 11866.8955923611. The cubic root of 140823211 is about 520.2651643176.

The spelling of 140823211 in words is "one hundred forty million, eight hundred twenty-three thousand, two hundred eleven".