1311503336434 has 4 divisors (see below), whose sum is σ = 1967255004654. Its totient is φ = 655751668216.

The previous prime is 1311503336419. The next prime is 1311503336443. The reversal of 1311503336434 is 4346333051131.

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

It can be written as a sum of positive squares in only one way, i.e., 751857207409 + 559646129025 = 867097^2 + 748095^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1311503336393 and 1311503336402.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327875834107 + ... + 327875834110.

Almost surely, 2^{1311503336434} is an apocalyptic number.

1311503336434 is a deficient number, since it is larger than the sum of its proper divisors (655751668220).

1311503336434 is an equidigital number, since it uses as much as digits as its factorization.

1311503336434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655751668219.

The product of its (nonzero) digits is 116640, while the sum is 37.

Adding to 1311503336434 its reverse (4346333051131), we get a palindrome (5657836387565).

The spelling of 1311503336434 in words is "one trillion, three hundred eleven billion, five hundred three million, three hundred thirty-six thousand, four hundred thirty-four".