1313111122 has 4 divisors (see below), whose sum is σ = 1969666686. Its totient is φ = 656555560.

The previous prime is 1313111029. The next prime is 1313111153. The reversal of 1313111122 is 2211113131.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 1293049681 + 20061441 = 35959^2 + 4479^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1313111096 and 1313111105.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328277779 + ... + 328277782.

Almost surely, 2^1313111122 is an apocalyptic number.

1313111122 is a deficient number, since it is larger than the sum of its proper divisors (656555564).

1313111122 is an equidigital number, since it uses as much as digits as its factorization.

1313111122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656555563.

The product of its digits is 36, while the sum is 16.

The square root of 1313111122 is about 36236.8751688111. The cubic root of 1313111122 is about 1095.0496900645.

Adding to 1313111122 its reverse (2211113131), we get a palindrome (3524224253).

The spelling of 1313111122 in words is "one billion, three hundred thirteen million, one hundred eleven thousand, one hundred twenty-two".