143656213 has 2 divisors, whose sum is σ = 143656214. Its totient is φ = 143656212.

The previous prime is 143656199. The next prime is 143656243. The reversal of 143656213 is 312656341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 141562404 + 2093809 = 11898^2 + 1447^2 .

It is an emirp because it is prime and its reverse (312656341) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 143656213 - 2⁵ = 143656181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143656243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71828106 + 71828107.

It is an arithmetic number, because the mean of its divisors is an integer number (71828107).

Almost surely, 2^143656213 is an apocalyptic number.

It is an amenable number.

143656213 is a deficient number, since it is larger than the sum of its proper divisors (1).

143656213 is an equidigital number, since it uses as much as digits as its factorization.

143656213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 31.

The square root of 143656213 is about 11985.6669818580. Note that the first 3 decimals coincide. The cubic root of 143656213 is about 523.7308275573.

The spelling of 143656213 in words is "one hundred forty-three million, six hundred fifty-six thousand, two hundred thirteen".