1331323323331 has 4 divisors (see below), whose sum is σ = 1331408413000. Its totient is φ = 1331238233664.

The previous prime is 1331323323313. The next prime is 1331323323371. The reversal of 1331323323331 is 1333233231331.

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

It is a cyclic number.

It is not a de Polignac number, because 1331323323331 - 2¹³ = 1331323315139 is a prime.

It is a super-2 number, since 2×1331323323331² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1331323323293 and 1331323323302.

It is not an unprimeable number, because it can be changed into a prime (1331323323371) 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, 42521361 + ... + 42552658.

It is an arithmetic number, because the mean of its divisors is an integer number (332852103250).

Almost surely, 2^{1331323323331} is an apocalyptic number.

1331323323331 is a deficient number, since it is larger than the sum of its proper divisors (85089669).

1331323323331 is an equidigital number, since it uses as much as digits as its factorization.

1331323323331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85089668.

The product of its digits is 26244, while the sum is 31.

Adding to 1331323323331 its reverse (1333233231331), we get a palindrome (2664556554662).

The spelling of 1331323323331 in words is "one trillion, three hundred thirty-one billion, three hundred twenty-three million, three hundred twenty-three thousand, three hundred thirty-one".