1311260832 has 192 divisors, whose sum is σ = 4601318400. Its totient is φ = 354896640.

The previous prime is 1311260831. The next prime is 1311260887. The reversal of 1311260832 is 2380621131.

It is a happy number.

1311260832 is a `hidden beast` number, since 13 + 1 + 12 + 608 + 32 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 1311260796 and 1311260805.

It is not an unprimeable number, because it can be changed into a prime (1311260831) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 109207 + ... + 120617.

It is an arithmetic number, because the mean of its divisors is an integer number (23965200).

Almost surely, 2^1311260832 is an apocalyptic number.

1311260832 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 1311260832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2300659200).

1311260832 is an abundant number, since it is smaller than the sum of its proper divisors (3290057568).

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

1311260832 is a wasteful number, since it uses less digits than its factorization.

1311260832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11456 (or 11442 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 1311260832 is about 36211.3356837331. The cubic root of 1311260832 is about 1094.5351075888.

Adding to 1311260832 its reverse (2380621131), we get a palindrome (3691881963).

The spelling of 1311260832 in words is "one billion, three hundred eleven million, two hundred sixty thousand, eight hundred thirty-two".