1311014321 has 4 divisors (see below), whose sum is σ = 1312348992. Its totient is φ = 1309679652.

The previous prime is 1311014317. The next prime is 1311014323. The reversal of 1311014321 is 1234101131.

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.

It is a cyclic number.

It is not a de Polignac number, because 1311014321 - 2² = 1311014317 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1311014321.

It is not an unprimeable number, because it can be changed into a prime (1311014323) 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, 665861 + ... + 667826.

It is an arithmetic number, because the mean of its divisors is an integer number (328087248).

Almost surely, 2^1311014321 is an apocalyptic number.

It is an amenable number.

1311014321 is a deficient number, since it is larger than the sum of its proper divisors (1334671).

1311014321 is an equidigital number, since it uses as much as digits as its factorization.

1311014321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1334670.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1311014321 is about 36207.9317415397. The cubic root of 1311014321 is about 1094.4665141030.

Adding to 1311014321 its reverse (1234101131), we get a palindrome (2545115452).

The spelling of 1311014321 in words is "one billion, three hundred eleven million, fourteen thousand, three hundred twenty-one".