143143309 has 2 divisors, whose sum is σ = 143143310. Its totient is φ = 143143308.

The previous prime is 143143261. The next prime is 143143327. The reversal of 143143309 is 903341341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 136656100 + 6487209 = 11690^2 + 2547^2 .

It is a cyclic number.

It is not a de Polignac number, because 143143309 - 2¹³ = 143135117 is a prime.

It is a super-2 number, since 2×143143309² = 40980013822938962, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143143369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71571654 + 71571655.

It is an arithmetic number, because the mean of its divisors is an integer number (71571655).

Almost surely, 2^143143309 is an apocalyptic number.

It is an amenable number.

143143309 is a deficient number, since it is larger than the sum of its proper divisors (1).

143143309 is an equidigital number, since it uses as much as digits as its factorization.

143143309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 143143309 is about 11964.2512929142. The cubic root of 143143309 is about 523.1067822283.

The spelling of 143143309 in words is "one hundred forty-three million, one hundred forty-three thousand, three hundred nine".