143231546545 has 4 divisors (see below), whose sum is σ = 171877855860. Its totient is φ = 114585237232.

The previous prime is 143231546543. The next prime is 143231546551. The reversal of 143231546545 is 545645132341.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 545645132341 = 166157 ⋅3283913.

It can be written as a sum of positive squares in 2 ways, for example, as 22828792464 + 120402754081 = 151092^2 + 346991^2 .

It is a cyclic number.

It is not a de Polignac number, because 143231546545 - 2¹ = 143231546543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (143231546543) 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, 14323154650 + ... + 14323154659.

It is an arithmetic number, because the mean of its divisors is an integer number (42969463965).

Almost surely, 2^143231546545 is an apocalyptic number.

It is an amenable number.

143231546545 is a deficient number, since it is larger than the sum of its proper divisors (28646309315).

143231546545 is an equidigital number, since it uses as much as digits as its factorization.

143231546545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28646309314.

The product of its digits is 864000, while the sum is 43.

Adding to 143231546545 its reverse (545645132341), we get a palindrome (688876678886).

The spelling of 143231546545 in words is "one hundred forty-three billion, two hundred thirty-one million, five hundred forty-six thousand, five hundred forty-five".