140220434231 has 16 divisors (see below), whose sum is σ = 145751036256. Its totient is φ = 134803200000.

The previous prime is 140220434213. The next prime is 140220434243. The reversal of 140220434231 is 132434022041.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140220434231 is a prime.

It is a super-2 number, since 2×140220434231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 140220434231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140220431231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 793511 + ... + 953991.

It is an arithmetic number, because the mean of its divisors is an integer number (9109439766).

Almost surely, 2^140220434231 is an apocalyptic number.

140220434231 is a deficient number, since it is larger than the sum of its proper divisors (5530602025).

140220434231 is a wasteful number, since it uses less digits than its factorization.

140220434231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160834.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 140220434231 its reverse (132434022041), we get a palindrome (272654456272).

The spelling of 140220434231 in words is "one hundred forty billion, two hundred twenty million, four hundred thirty-four thousand, two hundred thirty-one".