143231313 has 8 divisors (see below), whose sum is σ = 191553376. Its totient is φ = 95198400.

The previous prime is 143231279. The next prime is 143231369. The reversal of 143231313 is 313132341.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 143231313 - 2¹⁰ = 143230289 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 143231313.

It is not an unprimeable number, because it can be changed into a prime (143231713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71128 + ... + 73113.

It is an arithmetic number, because the mean of its divisors is an integer number (23944172).

Almost surely, 2^143231313 is an apocalyptic number.

It is an amenable number.

143231313 is a deficient number, since it is larger than the sum of its proper divisors (48322063).

143231313 is a wasteful number, since it uses less digits than its factorization.

143231313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144575.

The product of its digits is 648, while the sum is 21.

The square root of 143231313 is about 11967.9285175004. The cubic root of 143231313 is about 523.2139616665.

Adding to 143231313 its reverse (313132341), we get a palindrome (456363654).

The spelling of 143231313 in words is "one hundred forty-three million, two hundred thirty-one thousand, three hundred thirteen".