1311401104 has 40 divisors (see below), whose sum is σ = 2745058680. Its totient is φ = 603322368.

The previous prime is 1311401089. The next prime is 1311401137. The reversal of 1311401104 is 4011041131.

It can be written as a sum of positive squares in 4 ways, for example, as 49730704 + 1261670400 = 7052^2 + 35520^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

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, 55992 + ... + 75880.

It is an arithmetic number, because the mean of its divisors is an integer number (68626467).

Almost surely, 2^1311401104 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 1311401104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1372529340).

1311401104 is an abundant number, since it is smaller than the sum of its proper divisors (1433657576).

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

1311401104 is a wasteful number, since it uses less digits than its factorization.

1311401104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20227 (or 20221 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 1311401104 is about 36213.2724839940. The cubic root of 1311401104 is about 1094.5741354594.

Adding to 1311401104 its reverse (4011041131), we get a palindrome (5322442235).

The spelling of 1311401104 in words is "one billion, three hundred eleven million, four hundred one thousand, one hundred four".