131223021102 has 12 divisors (see below), whose sum is σ = 284316545760. Its totient is φ = 43741007028.

The previous prime is 131223021079. The next prime is 131223021103. The reversal of 131223021102 is 201120322131.

131223021102 is a `hidden beast` number, since 1 + 312 + 230 + 21 + 102 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 7290167839 = 131223021102 / (1 + 3 + 1 + 2 + 2 + 3 + 0 + 2 + 1 + 1 + 0 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131223021103) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 3645083902 + ... + 3645083937.

It is an arithmetic number, because the mean of its divisors is an integer number (23693045480).

Almost surely, 2^131223021102 is an apocalyptic number.

131223021102 is an abundant number, since it is smaller than the sum of its proper divisors (153093524658).

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

131223021102 is a wasteful number, since it uses less digits than its factorization.

131223021102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7290167847 (or 7290167844 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 131223021102 its reverse (201120322131), we get a palindrome (332343343233).

The spelling of 131223021102 in words is "one hundred thirty-one billion, two hundred twenty-three million, twenty-one thousand, one hundred two".