143402213 has 2 divisors, whose sum is σ = 143402214. Its totient is φ = 143402212.

The previous prime is 143402209. The next prime is 143402221. The reversal of 143402213 is 312204341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72556324 + 70845889 = 8518^2 + 8417^2 .

It is a cyclic number.

It is not a de Polignac number, because 143402213 - 2² = 143402209 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143402243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71701106 + 71701107.

It is an arithmetic number, because the mean of its divisors is an integer number (71701107).

Almost surely, 2^143402213 is an apocalyptic number.

It is an amenable number.

143402213 is a deficient number, since it is larger than the sum of its proper divisors (1).

143402213 is an equidigital number, since it uses as much as digits as its factorization.

143402213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 143402213 is about 11975.0663046181. The cubic root of 143402213 is about 523.4219742029.

Adding to 143402213 its reverse (312204341), we get a palindrome (455606554).

The spelling of 143402213 in words is "one hundred forty-three million, four hundred two thousand, two hundred thirteen".