1321143023275 has 24 divisors (see below), whose sum is σ = 1694812306320. Its totient is φ = 1020406047360.

The previous prime is 1321143023273. The next prime is 1321143023287. The reversal of 1321143023275 is 5723203411231.

It is not a de Polignac number, because 1321143023275 - 2¹ = 1321143023273 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1321143023275.

It is not an unprimeable number, because it can be changed into a prime (1321143023273) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14161332 + ... + 14254318.

It is an arithmetic number, because the mean of its divisors is an integer number (70617179430).

Almost surely, 2^{1321143023275} is an apocalyptic number.

1321143023275 is a deficient number, since it is larger than the sum of its proper divisors (373669283045).

1321143023275 is a wasteful number, since it uses less digits than its factorization.

1321143023275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112623 (or 112618 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 34.

The spelling of 1321143023275 in words is "one trillion, three hundred twenty-one billion, one hundred forty-three million, twenty-three thousand, two hundred seventy-five".