1311041304 has 48 divisors (see below), whose sum is σ = 3568799520. Its totient is φ = 434790720.

The previous prime is 1311041273. The next prime is 1311041317. The reversal of 1311041304 is 4031401131.

It is a super-4 number, since 4×1311041304⁴ (a number of 38 digits) contains 4444 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32032 + ... + 60399.

It is an arithmetic number, because the mean of its divisors is an integer number (74349990).

Almost surely, 2^1311041304 is an apocalyptic number.

It is an amenable number.

1311041304 is an abundant number, since it is smaller than the sum of its proper divisors (2257758216).

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

1311041304 is a wasteful number, since it uses less digits than its factorization.

1311041304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92640 (or 92633 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1311041304 is about 36208.3043513501. The cubic root of 1311041304 is about 1094.4740227389.

Adding to 1311041304 its reverse (4031401131), we get a palindrome (5342442435).

The spelling of 1311041304 in words is "one billion, three hundred eleven million, forty-one thousand, three hundred four".