1311230332100 has 36 divisors (see below), whose sum is σ = 3064244425284. Its totient is φ = 484146583680.

The previous prime is 1311230332099. The next prime is 1311230332109. The reversal of 1311230332100 is 12330321131.

It can be written as a sum of positive squares in 6 ways, for example, as 242268715264 + 1068961616836 = 492208^2 + 1033906^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (1311230332109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 504318059 + ... + 504320658.

Almost surely, 2^{1311230332100} is an apocalyptic number.

1311230332100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1311230332100 is an abundant number, since it is smaller than the sum of its proper divisors (1753014093184).

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

1311230332100 is a wasteful number, since it uses less digits than its factorization.

1311230332100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1008638744 (or 1008638737 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 1311230332100 its reverse (12330321131), we get a palindrome (1323560653231).

The spelling of 1311230332100 in words is "one trillion, three hundred eleven billion, two hundred thirty million, three hundred thirty-two thousand, one hundred".