1312180055100 has 144 divisors (see below), whose sum is σ = 4222284860640. Its totient is φ = 349593753600.

The previous prime is 1312180055057. The next prime is 1312180055141. The reversal of 1312180055100 is 15500812131.

1312180055100 is a `hidden beast` number, since 1 + 31 + 2 + 1 + 80 + 0 + 551 + 0 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2728780 + ... + 3173420.

Almost surely, 2^{1312180055100} is an apocalyptic number.

1312180055100 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 1312180055100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2111142430320).

1312180055100 is an abundant number, since it is smaller than the sum of its proper divisors (2910104805540).

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

1312180055100 is a wasteful number, since it uses less digits than its factorization.

1312180055100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445757 (or 445744 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 27.

Adding to 1312180055100 its reverse (15500812131), we get a palindrome (1327680867231).

It can be divided in two parts, 13121800 and 55100, that added together give a square (13176900 = 3630²).

The spelling of 1312180055100 in words is "one trillion, three hundred twelve billion, one hundred eighty million, fifty-five thousand, one hundred".