1331112341345 has 4 divisors (see below), whose sum is σ = 1597334809620. Its totient is φ = 1064889873072.

The previous prime is 1331112341333. The next prime is 1331112341353. The reversal of 1331112341345 is 5431432111331.

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 852148688161 + 478963653184 = 923119^2 + 692072^2 .

It is a cyclic number.

It is not a de Polignac number, because 1331112341345 - 2¹⁶ = 1331112275809 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133111234130 + ... + 133111234139.

It is an arithmetic number, because the mean of its divisors is an integer number (399333702405).

Almost surely, 2^{1331112341345} is an apocalyptic number.

It is an amenable number.

1331112341345 is a deficient number, since it is larger than the sum of its proper divisors (266222468275).

1331112341345 is an equidigital number, since it uses as much as digits as its factorization.

1331112341345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266222468274.

The product of its digits is 12960, while the sum is 32.

Adding to 1331112341345 its reverse (5431432111331), we get a palindrome (6762544452676).

The spelling of 1331112341345 in words is "one trillion, three hundred thirty-one billion, one hundred twelve million, three hundred forty-one thousand, three hundred forty-five".