143321314523 has 4 divisors (see below), whose sum is σ = 149552676048. Its totient is φ = 137089953000.

The previous prime is 143321314489. The next prime is 143321314547. The reversal of 143321314523 is 325413123341.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 325413123341 = 23 ⋅14148396667.

It is a cyclic number.

It is not a de Polignac number, because 143321314523 - 2⁸ = 143321314267 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 143321314523.

It is not an unprimeable number, because it can be changed into a prime (143321314553) 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, 3115680728 + ... + 3115680773.

It is an arithmetic number, because the mean of its divisors is an integer number (37388169012).

Almost surely, 2^143321314523 is an apocalyptic number.

143321314523 is a deficient number, since it is larger than the sum of its proper divisors (6231361525).

143321314523 is an equidigital number, since it uses as much as digits as its factorization.

143321314523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6231361524.

The product of its digits is 25920, while the sum is 32.

Adding to 143321314523 its reverse (325413123341), we get a palindrome (468734437864).

The spelling of 143321314523 in words is "one hundred forty-three billion, three hundred twenty-one million, three hundred fourteen thousand, five hundred twenty-three".