165303143 has 2 divisors, whose sum is σ = 165303144. Its totient is φ = 165303142.

The previous prime is 165303119. The next prime is 165303157. The reversal of 165303143 is 341303561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 165303143 - 2¹⁶ = 165237607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165303043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82651571 + 82651572.

It is an arithmetic number, because the mean of its divisors is an integer number (82651572).

Almost surely, 2^165303143 is an apocalyptic number.

165303143 is a deficient number, since it is larger than the sum of its proper divisors (1).

165303143 is an equidigital number, since it uses as much as digits as its factorization.

165303143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 165303143 is about 12857.0269891604. The cubic root of 165303143 is about 548.8163448409.

The spelling of 165303143 in words is "one hundred sixty-five million, three hundred three thousand, one hundred forty-three".