143431313 has 8 divisors (see below), whose sum is σ = 146217576. Its totient is φ = 140659200.

The previous prime is 143431283. The next prime is 143431319. The reversal of 143431313 is 313134341.

It can be written as a sum of positive squares in 4 ways, for example, as 13630864 + 129800449 = 3692^2 + 11393^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 143431313 - 2¹⁰ = 143430289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (143431319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18203 + ... + 24863.

It is an arithmetic number, because the mean of its divisors is an integer number (18277197).

Almost surely, 2^143431313 is an apocalyptic number.

It is an amenable number.

143431313 is a deficient number, since it is larger than the sum of its proper divisors (2786263).

143431313 is an equidigital number, since it uses as much as digits as its factorization.

143431313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7075.

The product of its digits is 1296, while the sum is 23.

The square root of 143431313 is about 11976.2812675722. The cubic root of 143431313 is about 523.4573770719.

Adding to 143431313 its reverse (313134341), we get a palindrome (456565654).

The spelling of 143431313 in words is "one hundred forty-three million, four hundred thirty-one thousand, three hundred thirteen".