1311166422 has 12 divisors (see below), whose sum is σ = 2840860620. Its totient is φ = 437055468.

The previous prime is 1311166393. The next prime is 1311166427. The reversal of 1311166422 is 2246611131.

It is a happy number.

1311166422 is a `hidden beast` number, since 1 + 3 + 1 + 1 + 16 + 642 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311166427) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36421272 + ... + 36421307.

It is an arithmetic number, because the mean of its divisors is an integer number (236738385).

Almost surely, 2^1311166422 is an apocalyptic number.

1311166422 is an abundant number, since it is smaller than the sum of its proper divisors (1529694198).

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

1311166422 is a wasteful number, since it uses less digits than its factorization.

1311166422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72842587 (or 72842584 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 1311166422 is about 36210.0320629518. The cubic root of 1311166422 is about 1094.5088383328.

Adding to 1311166422 its reverse (2246611131), we get a palindrome (3557777553).

The spelling of 1311166422 in words is "one billion, three hundred eleven million, one hundred sixty-six thousand, four hundred twenty-two".