1313323311 has 4 divisors (see below), whose sum is σ = 1751097752. Its totient is φ = 875548872.

The previous prime is 1313323309. The next prime is 1313323331. The reversal of 1313323311 is 1133233131.

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

It is not a de Polignac number, because 1313323311 - 2¹ = 1313323309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313323331) 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, 218887216 + ... + 218887221.

It is an arithmetic number, because the mean of its divisors is an integer number (437774438).

Almost surely, 2^1313323311 is an apocalyptic number.

1313323311 is a deficient number, since it is larger than the sum of its proper divisors (437774441).

1313323311 is an equidigital number, since it uses as much as digits as its factorization.

1313323311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437774440.

The product of its digits is 486, while the sum is 21.

The square root of 1313323311 is about 36239.8028554240. The cubic root of 1313323311 is about 1095.1086708520.

Adding to 1313323311 its reverse (1133233131), we get a palindrome (2446556442).

The spelling of 1313323311 in words is "one billion, three hundred thirteen million, three hundred twenty-three thousand, three hundred eleven".