1311230322 has 32 divisors (see below), whose sum is σ = 3040536960. Its totient is φ = 418073040.

The previous prime is 1311230317. The next prime is 1311230329. The reversal of 1311230322 is 2230321131.

1311230322 is a `hidden beast` number, since 1 + 311 + 2 + 30 + 322 = 666.

1311230322 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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 = 1311230295 and 1311230304.

It is not an unprimeable number, because it can be changed into a prime (1311230329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 526629 + ... + 529112.

It is an arithmetic number, because the mean of its divisors is an integer number (95016780).

Almost surely, 2^1311230322 is an apocalyptic number.

1311230322 is an abundant number, since it is smaller than the sum of its proper divisors (1729306638).

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

1311230322 is a wasteful number, since it uses less digits than its factorization.

1311230322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1055775 (or 1055769 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1311230322 is about 36210.9144043616. The cubic root of 1311230322 is about 1094.5266184247.

Adding to 1311230322 its reverse (2230321131), we get a palindrome (3541551453).

It can be divided in two parts, 13112 and 30322, that added together give a palindrome (43434).

The spelling of 1311230322 in words is "one billion, three hundred eleven million, two hundred thirty thousand, three hundred twenty-two".