140443144231 has 4 divisors (see below), whose sum is σ = 151246463032. Its totient is φ = 129639825432.

The previous prime is 140443144223. The next prime is 140443144243. The reversal of 140443144231 is 132441344041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132441344041 = 53051 ⋅2496491.

It is not a de Polignac number, because 140443144231 - 2³ = 140443144223 is a prime.

It is a super-2 number, since 2×140443144231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140443144193 and 140443144202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140443144931) 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, 5401659381 + ... + 5401659406.

It is an arithmetic number, because the mean of its divisors is an integer number (37811615758).

Almost surely, 2^140443144231 is an apocalyptic number.

140443144231 is a deficient number, since it is larger than the sum of its proper divisors (10803318801).

140443144231 is a wasteful number, since it uses less digits than its factorization.

140443144231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10803318800.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 140443144231 its reverse (132441344041), we get a palindrome (272884488272).

The spelling of 140443144231 in words is "one hundred forty billion, four hundred forty-three million, one hundred forty-four thousand, two hundred thirty-one".