1311520048 has 10 divisors (see below), whose sum is σ = 2541070124. Its totient is φ = 655760016.

The previous prime is 1311520037. The next prime is 1311520051. The reversal of 1311520048 is 8400251131.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40984986 + ... + 40985017.

Almost surely, 2^1311520048 is an apocalyptic number.

It is an amenable number.

1311520048 is a deficient number, since it is larger than the sum of its proper divisors (1229550076).

1311520048 is an equidigital number, since it uses as much as digits as its factorization.

1311520048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81970011 (or 81970005 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 1311520048 is about 36214.9147175580. The cubic root of 1311520048 is about 1094.6072270614.

Adding to 1311520048 its reverse (8400251131), we get a palindrome (9711771179).

The spelling of 1311520048 in words is "one billion, three hundred eleven million, five hundred twenty thousand, forty-eight".