1310321100 has 108 divisors (see below), whose sum is σ = 4167297512. Its totient is φ = 317644800.

The previous prime is 1310321099. The next prime is 1310321107. The reversal of 1310321100 is 11230131.

1310321100 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (1310321107) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 18252 + ... + 54348.

Almost surely, 2^1310321100 is an apocalyptic number.

1310321100 is a gapful number since it is divisible by the number (10) 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 1310321100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2083648756).

1310321100 is an abundant number, since it is smaller than the sum of its proper divisors (2856976412).

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

1310321100 is a wasteful number, since it uses less digits than its factorization.

1310321100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36136 (or 36118 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 1310321100 is about 36198.3576975531. The cubic root of 1310321100 is about 1094.2735741977.

Adding to 1310321100 its reverse (11230131), we get a palindrome (1321551231).

The spelling of 1310321100 in words is "one billion, three hundred ten million, three hundred twenty-one thousand, one hundred".