143224897 has 2 divisors, whose sum is σ = 143224898. Its totient is φ = 143224896.

The previous prime is 143224871. The next prime is 143224903. The reversal of 143224897 is 798422341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 140564736 + 2660161 = 11856^2 + 1631^2 .

It is an emirp because it is prime and its reverse (798422341) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 143224897 - 2¹⁹ = 142700609 is a prime.

It is a super-2 number, since 2×143224897² = 41026742241321218, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (143224297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71612448 + 71612449.

It is an arithmetic number, because the mean of its divisors is an integer number (71612449).

Almost surely, 2^143224897 is an apocalyptic number.

It is an amenable number.

143224897 is a deficient number, since it is larger than the sum of its proper divisors (1).

143224897 is an equidigital number, since it uses as much as digits as its factorization.

143224897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 40.

The square root of 143224897 is about 11967.6604647692. The cubic root of 143224897 is about 523.2061491502.

The spelling of 143224897 in words is "one hundred forty-three million, two hundred twenty-four thousand, eight hundred ninety-seven".