131123211102 has 128 divisors (see below), whose sum is σ = 324913680000. Its totient is φ = 38919121920.

The previous prime is 131123211101. The next prime is 131123211203. The reversal of 131123211102 is 201112321131.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131123211101) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 30148024 + ... + 30152372.

It is an arithmetic number, because the mean of its divisors is an integer number (2538388125).

Almost surely, 2^131123211102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131123211102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162456840000).

131123211102 is an abundant number, since it is smaller than the sum of its proper divisors (193790468898).

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

131123211102 is a wasteful number, since it uses less digits than its factorization.

131123211102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5883 (or 5877 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 131123211102 its reverse (201112321131), we get a palindrome (332235532233).

It can be divided in two parts, 131123 and 211102, that added together give a square (342225 = 585²).

The spelling of 131123211102 in words is "one hundred thirty-one billion, one hundred twenty-three million, two hundred eleven thousand, one hundred two".