1311000552 has 192 divisors, whose sum is σ = 3891888000. Its totient is φ = 412625664.

The previous prime is 1311000533. The next prime is 1311000599. The reversal of 1311000552 is 2550001131.

1311000552 is a `hidden beast` number, since 1 + 3 + 110 + 0 + 0 + 552 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4873474 + ... + 4873742.

It is an arithmetic number, because the mean of its divisors is an integer number (20270250).

Almost surely, 2^1311000552 is an apocalyptic number.

1311000552 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 1311000552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1945944000).

1311000552 is an abundant number, since it is smaller than the sum of its proper divisors (2580887448).

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

1311000552 is a wasteful number, since it uses less digits than its factorization.

1311000552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422 (or 406 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 1311000552 is about 36207.7416031434. The cubic root of 1311000552 is about 1094.4626825247.

Adding to 1311000552 its reverse (2550001131), we get a palindrome (3861001683).

The spelling of 1311000552 in words is "one billion, three hundred eleven million, five hundred fifty-two", and thus it is an aban number.