1331344202413 has 4 divisors (see below), whose sum is σ = 1343126009628. Its totient is φ = 1319562395200.

The previous prime is 1331344202401. The next prime is 1331344202429. The reversal of 1331344202413 is 3142024431331.

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 13251923689 + 1318092278724 = 115117^2 + 1148082^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1331344202413 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 (1331344205413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5890903438 + ... + 5890903663.

It is an arithmetic number, because the mean of its divisors is an integer number (335781502407).

Almost surely, 2^{1331344202413} is an apocalyptic number.

It is an amenable number.

1331344202413 is a deficient number, since it is larger than the sum of its proper divisors (11781807215).

1331344202413 is a wasteful number, since it uses less digits than its factorization.

1331344202413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11781807214.

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 1331344202413 its reverse (3142024431331), we get a palindrome (4473368633744).

The spelling of 1331344202413 in words is "one trillion, three hundred thirty-one billion, three hundred forty-four million, two hundred two thousand, four hundred thirteen".