1311730572 has 48 divisors (see below), whose sum is σ = 3202375680. Its totient is φ = 417107328.

The previous prime is 1311730571. The next prime is 1311730577. The reversal of 1311730572 is 2750371131.

It is not an unprimeable number, because it can be changed into a prime (1311730571) 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, 99504 + ... + 111912.

It is an arithmetic number, because the mean of its divisors is an integer number (66716160).

Almost surely, 2^1311730572 is an apocalyptic number.

1311730572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1311730572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1601187840).

1311730572 is an abundant number, since it is smaller than the sum of its proper divisors (1890645108).

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

1311730572 is a wasteful number, since it uses less digits than its factorization.

1311730572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12822 (or 12820 counting only the distinct ones).

The product of its (nonzero) digits is 4410, while the sum is 30.

The square root of 1311730572 is about 36217.8211934401. The cubic root of 1311730572 is about 1094.6657923786.

The spelling of 1311730572 in words is "one billion, three hundred eleven million, seven hundred thirty thousand, five hundred seventy-two".