1303211331313 has 4 divisors (see below), whose sum is σ = 1359872693568. Its totient is φ = 1246549969060.

The previous prime is 1303211331299. The next prime is 1303211331337. The reversal of 1303211331313 is 3131331123031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1303211331313 - 2⁵ = 1303211331281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1303211331353) 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, 28330681093 + ... + 28330681138.

It is an arithmetic number, because the mean of its divisors is an integer number (339968173392).

Almost surely, 2^{1303211331313} is an apocalyptic number.

It is an amenable number.

1303211331313 is a deficient number, since it is larger than the sum of its proper divisors (56661362255).

1303211331313 is an equidigital number, since it uses as much as digits as its factorization.

1303211331313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56661362254.

The product of its (nonzero) digits is 1458, while the sum is 25.

Adding to 1303211331313 its reverse (3131331123031), we get a palindrome (4434542454344).

The spelling of 1303211331313 in words is "one trillion, three hundred three billion, two hundred eleven million, three hundred thirty-one thousand, three hundred thirteen".