143309996173 has 2 divisors, whose sum is σ = 143309996174. Its totient is φ = 143309996172.

The previous prime is 143309996171. The next prime is 143309996183. The reversal of 143309996173 is 371699903341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 141810990084 + 1499006089 = 376578^2 + 38717^2 .

It is a cyclic number.

It is not a de Polignac number, because 143309996173 - 2¹ = 143309996171 is a prime.

Together with 143309996171, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143309996171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71654998086 + 71654998087.

It is an arithmetic number, because the mean of its divisors is an integer number (71654998087).

Almost surely, 2^143309996173 is an apocalyptic number.

It is an amenable number.

143309996173 is a deficient number, since it is larger than the sum of its proper divisors (1).

143309996173 is an equidigital number, since it uses as much as digits as its factorization.

143309996173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3306744, while the sum is 55.

The spelling of 143309996173 in words is "one hundred forty-three billion, three hundred nine million, nine hundred ninety-six thousand, one hundred seventy-three".