143431031111 has 4 divisors (see below), whose sum is σ = 143431789992. Its totient is φ = 143430272232.

The previous prime is 143431031089. The next prime is 143431031113. The reversal of 143431031111 is 111130134341.

143431031111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-143431031111 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 (143431031113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154745 + ... + 557501.

It is an arithmetic number, because the mean of its divisors is an integer number (35857947498).

Almost surely, 2^143431031111 is an apocalyptic number.

143431031111 is a deficient number, since it is larger than the sum of its proper divisors (758881).

143431031111 is an equidigital number, since it uses as much as digits as its factorization.

143431031111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758880.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 143431031111 its reverse (111130134341), we get a palindrome (254561165452).

The spelling of 143431031111 in words is "one hundred forty-three billion, four hundred thirty-one million, thirty-one thousand, one hundred eleven".