1313052811 has 4 divisors (see below), whose sum is σ = 1500631792. Its totient is φ = 1125473832.

The previous prime is 1313052803. The next prime is 1313052827. The reversal of 1313052811 is 1182503131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1182503131 = 439 ⋅2693629.

It is not a de Polignac number, because 1313052811 - 2³ = 1313052803 is a prime.

It is a super-3 number, since 3×1313052811³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1313052211) 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, 93789480 + ... + 93789493.

It is an arithmetic number, because the mean of its divisors is an integer number (375157948).

Almost surely, 2^1313052811 is an apocalyptic number.

1313052811 is a deficient number, since it is larger than the sum of its proper divisors (187578981).

1313052811 is an equidigital number, since it uses as much as digits as its factorization.

1313052811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187578980.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 1313052811 is about 36236.0705789135. The cubic root of 1313052811 is about 1095.0334806246.

Adding to 1313052811 its reverse (1182503131), we get a palindrome (2495555942).

The spelling of 1313052811 in words is "one billion, three hundred thirteen million, fifty-two thousand, eight hundred eleven".