31443144143 has 2 divisors, whose sum is σ = 31443144144. Its totient is φ = 31443144142.

The previous prime is 31443144107. The next prime is 31443144191. The reversal of 31443144143 is 34144134413.

It is a weak prime.

It is an emirp because it is prime and its reverse (34144134413) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31443144143 - 2⁶ = 31443144079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31443144043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15721572071 + 15721572072.

It is an arithmetic number, because the mean of its divisors is an integer number (15721572072).

Almost surely, 2^31443144143 is an apocalyptic number.

31443144143 is a deficient number, since it is larger than the sum of its proper divisors (1).

31443144143 is an equidigital number, since it uses as much as digits as its factorization.

31443144143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648, while the sum is 32.

Adding to 31443144143 its reverse (34144134413), we get a palindrome (65587278556).

The spelling of 31443144143 in words is "thirty-one billion, four hundred forty-three million, one hundred forty-four thousand, one hundred forty-three".