1311541552 has 40 divisors (see below), whose sum is σ = 2642366592. Its totient is φ = 629952000.

The previous prime is 1311541547. The next prime is 1311541571. The reversal of 1311541552 is 2551451131.

It is a self number, because there is not a number n which added to its sum of digits gives 1311541552.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58302 + ... + 77602.

Almost surely, 2^1311541552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1311541552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1321183296).

1311541552 is an abundant number, since it is smaller than the sum of its proper divisors (1330825040).

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

1311541552 is a wasteful number, since it uses less digits than its factorization.

1311541552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19477 (or 19471 counting only the distinct ones).

The product of its digits is 3000, while the sum is 28.

The square root of 1311541552 is about 36215.2116105926. The cubic root of 1311541552 is about 1094.6132095103.

Adding to 1311541552 its reverse (2551451131), we get a palindrome (3862992683).

The spelling of 1311541552 in words is "one billion, three hundred eleven million, five hundred forty-one thousand, five hundred fifty-two".