1312101100 has 72 divisors (see below), whose sum is σ = 2896720848. Its totient is φ = 515808000.

The previous prime is 1312101073. The next prime is 1312101121. The reversal of 1312101100 is 11012131.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1645902 + ... + 1646698.

It is an arithmetic number, because the mean of its divisors is an integer number (40232234).

Almost surely, 2^1312101100 is an apocalyptic number.

1312101100 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 1312101100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1448360424).

1312101100 is an abundant number, since it is smaller than the sum of its proper divisors (1584619748).

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

1312101100 is a wasteful number, since it uses less digits than its factorization.

1312101100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1075 (or 1068 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 10.

The square root of 1312101100 is about 36222.9361040764. The cubic root of 1312101100 is about 1094.7688537213.

Adding to 1312101100 its reverse (11012131), we get a palindrome (1323113231).

The spelling of 1312101100 in words is "one billion, three hundred twelve million, one hundred one thousand, one hundred".