143839313 has 4 divisors (see below), whose sum is σ = 147726900. Its totient is φ = 139951728.

The previous prime is 143839307. The next prime is 143839321. The reversal of 143839313 is 313938341.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 313938341 = 4817 ⋅65173.

It can be written as a sum of positive squares in 2 ways, for example, as 76877824 + 66961489 = 8768^2 + 8183^2 .

It is a cyclic number.

It is not a de Polignac number, because 143839313 - 2²⁰ = 142790737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (143839373) 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, 1943738 + ... + 1943811.

It is an arithmetic number, because the mean of its divisors is an integer number (36931725).

Almost surely, 2^143839313 is an apocalyptic number.

It is an amenable number.

143839313 is a deficient number, since it is larger than the sum of its proper divisors (3887587).

143839313 is an equidigital number, since it uses as much as digits as its factorization.

143839313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3887586.

The product of its digits is 23328, while the sum is 35.

The square root of 143839313 is about 11993.3028395017. The cubic root of 143839313 is about 523.9532437449.

The spelling of 143839313 in words is "one hundred forty-three million, eight hundred thirty-nine thousand, three hundred thirteen".