1311705552 has 40 divisors (see below), whose sum is σ = 3407316640. Its totient is φ = 434816640.

The previous prime is 1311705547. The next prime is 1311705569. The reversal of 1311705552 is 2555071131.

It is a congruent number.

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, 66802 + ... + 84177.

It is an arithmetic number, because the mean of its divisors is an integer number (85182916).

Almost surely, 2^1311705552 is an apocalyptic number.

1311705552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1311705552 is an abundant number, since it is smaller than the sum of its proper divisors (2095611088).

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

1311705552 is a wasteful number, since it uses less digits than its factorization.

1311705552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151171 (or 151165 counting only the distinct ones).

The product of its (nonzero) digits is 5250, while the sum is 30.

The square root of 1311705552 is about 36217.4757817273. The cubic root of 1311705552 is about 1094.6588324350.

Adding to 1311705552 its reverse (2555071131), we get a palindrome (3866776683).

The spelling of 1311705552 in words is "one billion, three hundred eleven million, seven hundred five thousand, five hundred fifty-two".