131223311112 has 64 divisors (see below), whose sum is σ = 336980206080. Its totient is φ = 42551903232.

The previous prime is 131223311111. The next prime is 131223311137. The reversal of 131223311112 is 211113322131.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (131223311111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10323753 + ... + 10336455.

It is an arithmetic number, because the mean of its divisors is an integer number (5265315720).

Almost surely, 2^131223311112 is an apocalyptic number.

131223311112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131223311112 is an abundant number, since it is smaller than the sum of its proper divisors (205756894968).

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

131223311112 is a wasteful number, since it uses less digits than its factorization.

131223311112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24382 (or 24378 counting only the distinct ones).

The product of its digits is 216, while the sum is 21.

Adding to 131223311112 its reverse (211113322131), we get a palindrome (342336633243).

The spelling of 131223311112 in words is "one hundred thirty-one billion, two hundred twenty-three million, three hundred eleven thousand, one hundred twelve".