143813 has 2 divisors, whose sum is σ = 143814. Its totient is φ = 143812.

The previous prime is 143807. The next prime is 143821. The reversal of 143813 is 318341.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 131044 + 12769 = 362^2 + 113^2 .

It is a cyclic number.

It is not a de Polignac number, because 143813 - 2⁴ = 143797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71906 + 71907.

It is an arithmetic number, because the mean of its divisors is an integer number (71907).

2¹⁴³⁸¹³ is an apocalyptic number.

It is an amenable number.

143813 is a deficient number, since it is larger than the sum of its proper divisors (1).

143813 is an equidigital number, since it uses as much as digits as its factorization.

143813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 20.

The square root of 143813 is about 379.2268450413. The cubic root of 143813 is about 52.3921292298.

The spelling of 143813 in words is "one hundred forty-three thousand, eight hundred thirteen".