1331320323301 has 4 divisors (see below), whose sum is σ = 1331428669900. Its totient is φ = 1331211976704.

The previous prime is 1331320323287. The next prime is 1331320323331. The reversal of 1331320323301 is 1033230231331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 409662722401 + 921657600900 = 640049^2 + 960030^2 .

It is a cyclic number.

It is not a de Polignac number, because 1331320323301 - 2¹⁹ = 1331319799013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331320323331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54154866 + ... + 54179443.

It is an arithmetic number, because the mean of its divisors is an integer number (332857167475).

Almost surely, 2^{1331320323301} is an apocalyptic number.

It is an amenable number.

1331320323301 is a deficient number, since it is larger than the sum of its proper divisors (108346599).

1331320323301 is a wasteful number, since it uses less digits than its factorization.

1331320323301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108346598.

The product of its (nonzero) digits is 2916, while the sum is 25.

Adding to 1331320323301 its reverse (1033230231331), we get a palindrome (2364550554632).

The spelling of 1331320323301 in words is "one trillion, three hundred thirty-one billion, three hundred twenty million, three hundred twenty-three thousand, three hundred one".