140243324424431 has 4 divisors (see below), whose sum is σ = 140280832672200. Its totient is φ = 140205816176664.

The previous prime is 140243324424403. The next prime is 140243324424433. The reversal of 140243324424431 is 134424423342041.

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 140243324424431 - 2³⁰ = 140242250682607 is a prime.

It is a super-2 number, since 2×140243324424431² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140243324424433) 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, 18754118276 + ... + 18754125753.

It is an arithmetic number, because the mean of its divisors is an integer number (35070208168050).

Almost surely, 2^{140243324424431} is an apocalyptic number.

140243324424431 is a deficient number, since it is larger than the sum of its proper divisors (37508247769).

140243324424431 is an equidigital number, since it uses as much as digits as its factorization.

140243324424431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37508247768.

The product of its (nonzero) digits is 884736, while the sum is 41.

Adding to 140243324424431 its reverse (134424423342041), we get a palindrome (274667747766472).

The spelling of 140243324424431 in words is "one hundred forty trillion, two hundred forty-three billion, three hundred twenty-four million, four hundred twenty-four thousand, four hundred thirty-one".