143131717573 has 4 divisors (see below), whose sum is σ = 154141849708. Its totient is φ = 132121585440.

The previous prime is 143131717559. The next prime is 143131717577. The reversal of 143131717573 is 375717131341.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 53103515364 + 90028202209 = 230442^2 + 300047^2 .

It is a de Polignac number, because none of the positive numbers 2^k-143131717573 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 (143131717577) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5505066048 + ... + 5505066073.

It is an arithmetic number, because the mean of its divisors is an integer number (38535462427).

Almost surely, 2^143131717573 is an apocalyptic number.

143131717573 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

143131717573 is a deficient number, since it is larger than the sum of its proper divisors (11010132135).

143131717573 is a wasteful number, since it uses less digits than its factorization.

143131717573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11010132134.

The product of its digits is 185220, while the sum is 43.

The spelling of 143131717573 in words is "one hundred forty-three billion, one hundred thirty-one million, seven hundred seventeen thousand, five hundred seventy-three".