1311313242 has 32 divisors (see below), whose sum is σ = 2716001280. Its totient is φ = 421574720.

The previous prime is 1311313231. The next prime is 1311313243. The reversal of 1311313242 is 2423131131.

It is not an unprimeable number, because it can be changed into a prime (1311313243) 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, 181063 + ... + 188165.

It is an arithmetic number, because the mean of its divisors is an integer number (84875040).

Almost surely, 2^1311313242 is an apocalyptic number.

1311313242 is an abundant number, since it is smaller than the sum of its proper divisors (1404688038).

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

1311313242 is a wasteful number, since it uses less digits than its factorization.

1311313242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8198.

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

The square root of 1311313242 is about 36212.0593449199. The cubic root of 1311313242 is about 1094.5496899458.

Adding to 1311313242 its reverse (2423131131), we get a palindrome (3734444373).

The spelling of 1311313242 in words is "one billion, three hundred eleven million, three hundred thirteen thousand, two hundred forty-two".