1311430122 has 32 divisors (see below), whose sum is σ = 3067675200. Its totient is φ = 414135504.

The previous prime is 1311430073. The next prime is 1311430147. The reversal of 1311430122 is 2210341131.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1311430095 and 1311430104.

It is an unprimeable number.

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, 638073 + ... + 640124.

It is an arithmetic number, because the mean of its divisors is an integer number (95864850).

Almost surely, 2^1311430122 is an apocalyptic number.

1311430122 is an abundant number, since it is smaller than the sum of its proper divisors (1756245078).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1311430122 is a wasteful number, since it uses less digits than its factorization.

1311430122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1278227 (or 1278221 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1311430122 is about 36213.6731359855. The cubic root of 1311430122 is about 1094.5822087885.

Adding to 1311430122 its reverse (2210341131), we get a palindrome (3521771253).

The spelling of 1311430122 in words is "one billion, three hundred eleven million, four hundred thirty thousand, one hundred twenty-two".