31444310143 has 2 divisors, whose sum is σ = 31444310144. Its totient is φ = 31444310142.

The previous prime is 31444310101. The next prime is 31444310171. The reversal of 31444310143 is 34101344413.

It is a happy number.

It is an a-pointer prime, because the next prime (31444310171) can be obtained adding 31444310143 to its sum of digits (28).

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31444310143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31444310543) 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 as a sum of consecutive naturals, namely, 15722155071 + 15722155072.

It is an arithmetic number, because the mean of its divisors is an integer number (15722155072).

Almost surely, 2^31444310143 is an apocalyptic number.

31444310143 is a deficient number, since it is larger than the sum of its proper divisors (1).

31444310143 is an equidigital number, since it uses as much as digits as its factorization.

31444310143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 31444310143 its reverse (34101344413), we get a palindrome (65545654556).

The spelling of 31444310143 in words is "thirty-one billion, four hundred forty-four million, three hundred ten thousand, one hundred forty-three".