1311034513 has 4 divisors (see below), whose sum is σ = 1323287280. Its totient is φ = 1298781748.

The previous prime is 1311034499. The next prime is 1311034519. The reversal of 1311034513 is 3154301131.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3154301131 = 19 ⋅166015849.

It is a cyclic number.

It is not a de Polignac number, because 1311034513 - 2⁵ = 1311034481 is a prime.

It is a super-2 number, since 2×1311034513² = 3437622988554294338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1311034519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6126223 + ... + 6126436.

It is an arithmetic number, because the mean of its divisors is an integer number (330821820).

Almost surely, 2^1311034513 is an apocalyptic number.

It is an amenable number.

1311034513 is a deficient number, since it is larger than the sum of its proper divisors (12252767).

1311034513 is a wasteful number, since it uses less digits than its factorization.

1311034513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12252766.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 1311034513 is about 36208.2105743987. The cubic root of 1311034513 is about 1094.4721329978.

Adding to 1311034513 its reverse (3154301131), we get a palindrome (4465335644).

The spelling of 1311034513 in words is "one billion, three hundred eleven million, thirty-four thousand, five hundred thirteen".