143204389 has 2 divisors, whose sum is σ = 143204390. Its totient is φ = 143204388.

The previous prime is 143204381. The next prime is 143204401. The reversal of 143204389 is 983402341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130919364 + 12285025 = 11442^2 + 3505^2 .

It is a cyclic number.

It is not a de Polignac number, because 143204389 - 2³ = 143204381 is a prime.

It is equal to p_8082934 and since 143204389 and 8082934 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143204381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71602194 + 71602195.

It is an arithmetic number, because the mean of its divisors is an integer number (71602195).

Almost surely, 2^143204389 is an apocalyptic number.

It is an amenable number.

143204389 is a deficient number, since it is larger than the sum of its proper divisors (1).

143204389 is an equidigital number, since it uses as much as digits as its factorization.

143204389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 143204389 is about 11966.8036250287. The cubic root of 143204389 is about 523.1811757829.

The spelling of 143204389 in words is "one hundred forty-three million, two hundred four thousand, three hundred eighty-nine".