1311331422 has 16 divisors (see below), whose sum is σ = 2632415760. Its totient is φ = 435484992.

The previous prime is 1311331409. The next prime is 1311331423. The reversal of 1311331422 is 2241331131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311331423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 404623 + ... + 407850.

It is an arithmetic number, because the mean of its divisors is an integer number (164525985).

Almost surely, 2^1311331422 is an apocalyptic number.

1311331422 is an abundant number, since it is smaller than the sum of its proper divisors (1321084338).

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

1311331422 is a wasteful number, since it uses less digits than its factorization.

1311331422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812747.

The product of its digits is 432, while the sum is 21.

The square root of 1311331422 is about 36212.3103653992. The cubic root of 1311331422 is about 1094.5547481884.

Adding to 1311331422 its reverse (2241331131), we get a palindrome (3552662553).

The spelling of 1311331422 in words is "one billion, three hundred eleven million, three hundred thirty-one thousand, four hundred twenty-two".