320049143 has 2 divisors, whose sum is σ = 320049144. Its totient is φ = 320049142.

The previous prime is 320049101. The next prime is 320049193. The reversal of 320049143 is 341940023.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 320049143 - 2²⁰ = 319000567 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320049193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160024571 + 160024572.

It is an arithmetic number, because the mean of its divisors is an integer number (160024572).

Almost surely, 2^320049143 is an apocalyptic number.

320049143 is a deficient number, since it is larger than the sum of its proper divisors (1).

320049143 is an equidigital number, since it uses as much as digits as its factorization.

320049143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 320049143 is about 17889.9173558740. The cubic root of 320049143 is about 684.0253907734.

Adding to 320049143 its reverse (341940023), we get a palindrome (661989166).

The spelling of 320049143 in words is "three hundred twenty million, forty-nine thousand, one hundred forty-three".