1301323143 has 16 divisors (see below), whose sum is σ = 1751299200. Its totient is φ = 859475040.

The previous prime is 1301323139. The next prime is 1301323159. The reversal of 1301323143 is 3413231031.

It is not a de Polignac number, because 1301323143 - 2² = 1301323139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1301323343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 209188 + ... + 215318.

It is an arithmetic number, because the mean of its divisors is an integer number (109456200).

Almost surely, 2^1301323143 is an apocalyptic number.

1301323143 is a deficient number, since it is larger than the sum of its proper divisors (449976057).

1301323143 is a wasteful number, since it uses less digits than its factorization.

1301323143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6782.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 1301323143 is about 36073.8567802224. The cubic root of 1301323143 is about 1091.7630315752.

Adding to 1301323143 its reverse (3413231031), we get a palindrome (4714554174).

The spelling of 1301323143 in words is "one billion, three hundred one million, three hundred twenty-three thousand, one hundred forty-three".