140343343 has 4 divisors (see below), whose sum is σ = 160392400. Its totient is φ = 120294288.

The previous prime is 140343323. The next prime is 140343353. The reversal of 140343343 is 343343041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 343343041 = 67 ⋅5124523.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140343343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140343323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10024518 + ... + 10024531.

It is an arithmetic number, because the mean of its divisors is an integer number (40098100).

Almost surely, 2^140343343 is an apocalyptic number.

140343343 is a deficient number, since it is larger than the sum of its proper divisors (20049057).

140343343 is an equidigital number, since it uses as much as digits as its factorization.

140343343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20049056.

The product of its (nonzero) digits is 5184, while the sum is 25.

The square root of 140343343 is about 11846.6595713729. The cubic root of 140343343 is about 519.6735413923.

Adding to 140343343 its reverse (343343041), we get a palindrome (483686384).

The spelling of 140343343 in words is "one hundred forty million, three hundred forty-three thousand, three hundred forty-three".