140343853 has 12 divisors (see below), whose sum is σ = 153335700. Its totient is φ = 128384256.

The previous prime is 140343821. The next prime is 140343869. The reversal of 140343853 is 358343041.

It can be written as a sum of positive squares in 6 ways, for example, as 47375689 + 92968164 = 6883^2 + 9642^2 .

It is not a de Polignac number, because 140343853 - 2⁵ = 140343821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140343883) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15423 + ... + 22771.

It is an arithmetic number, because the mean of its divisors is an integer number (12777975).

Almost surely, 2^140343853 is an apocalyptic number.

140343853 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

140343853 is a deficient number, since it is larger than the sum of its proper divisors (12991847).

140343853 is a wasteful number, since it uses less digits than its factorization.

140343853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7488 (or 7475 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 140343853 is about 11846.6810964084. The cubic root of 140343853 is about 519.6741708799.

Adding to 140343853 its reverse (358343041), we get a palindrome (498686894).

The spelling of 140343853 in words is "one hundred forty million, three hundred forty-three thousand, eight hundred fifty-three".