143105386 has 4 divisors (see below), whose sum is σ = 214658082. Its totient is φ = 71552692.

The previous prime is 143105383. The next prime is 143105407. The reversal of 143105386 is 683501341.

143105386 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 683501341 = 107 ⋅6387863.

It can be written as a sum of positive squares in only one way, i.e., 130988025 + 12117361 = 11445^2 + 3481^2 .

It is not an unprimeable number, because it can be changed into a prime (143105383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35776345 + ... + 35776348.

Almost surely, 2^143105386 is an apocalyptic number.

143105386 is a deficient number, since it is larger than the sum of its proper divisors (71552696).

143105386 is an equidigital number, since it uses as much as digits as its factorization.

143105386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71552695.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 143105386 is about 11962.6663415812. Note that the first 3 decimals coincide. The cubic root of 143105386 is about 523.0605825356.

The spelling of 143105386 in words is "one hundred forty-three million, one hundred five thousand, three hundred eighty-six".