1311707743 has 16 divisors (see below), whose sum is σ = 1436258304. Its totient is φ = 1192567680.

The previous prime is 1311707723. The next prime is 1311707767. The reversal of 1311707743 is 3477071131.

It is not a de Polignac number, because 1311707743 - 2²¹ = 1309610591 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1311707699 and 1311707708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311707713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 339046 + ... + 342892.

It is an arithmetic number, because the mean of its divisors is an integer number (89766144).

Almost surely, 2^1311707743 is an apocalyptic number.

1311707743 is a deficient number, since it is larger than the sum of its proper divisors (124550561).

1311707743 is a wasteful number, since it uses less digits than its factorization.

1311707743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4542.

The product of its (nonzero) digits is 12348, while the sum is 34.

The square root of 1311707743 is about 36217.5060295432. The cubic root of 1311707743 is about 1094.6594419204.

Adding to 1311707743 its reverse (3477071131), we get a palindrome (4788778874).

The spelling of 1311707743 in words is "one billion, three hundred eleven million, seven hundred seven thousand, seven hundred forty-three".