1311534330 has 32 divisors (see below), whose sum is σ = 3151137600. Its totient is φ = 349358592.

The previous prime is 1311534307. The next prime is 1311534331. The reversal of 1311534330 is 334351131.

It is a self number, because there is not a number n which added to its sum of digits gives 1311534330.

It is not an unprimeable number, because it can be changed into a prime (1311534331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4341 + ... + 51399.

It is an arithmetic number, because the mean of its divisors is an integer number (98473050).

Almost surely, 2^1311534330 is an apocalyptic number.

1311534330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1311534330 is an abundant number, since it is smaller than the sum of its proper divisors (1839603270).

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

1311534330 is a wasteful number, since it uses less digits than its factorization.

1311534330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47998.

The product of its (nonzero) digits is 1620, while the sum is 24.

The square root of 1311534330 is about 36215.1119009731. Note that the first 3 decimals coincide. The cubic root of 1311534330 is about 1094.6112003451.

Adding to 1311534330 its reverse (334351131), we get a palindrome (1645885461).

The spelling of 1311534330 in words is "one billion, three hundred eleven million, five hundred thirty-four thousand, three hundred thirty".