131223110100 has 72 divisors (see below), whose sum is σ = 380600848320. Its totient is φ = 34907239680.

The previous prime is 131223110089. The next prime is 131223110113. The reversal of 131223110100 is 1011322131.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 131223110100.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 412032 + ... + 657431.

Almost surely, 2^131223110100 is an apocalyptic number.

131223110100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131223110100 is an abundant number, since it is smaller than the sum of its proper divisors (249377738220).

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

131223110100 is a wasteful number, since it uses less digits than its factorization.

131223110100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1069889 (or 1069882 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 131223110100 its reverse (1011322131), we get a palindrome (132234432231).

The spelling of 131223110100 in words is "one hundred thirty-one billion, two hundred twenty-three million, one hundred ten thousand, one hundred".