131212230333420 has 24 divisors (see below), whose sum is σ = 367394244933744. Its totient is φ = 34989928088896.

The previous prime is 131212230333361. The next prime is 131212230333427. The reversal of 131212230333420 is 24333032212131.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (131212230333427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1093435252719 + ... + 1093435252838.

It is an arithmetic number, because the mean of its divisors is an integer number (15308093538906).

Almost surely, 2^{131212230333420} is an apocalyptic number.

131212230333420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131212230333420 is an abundant number, since it is smaller than the sum of its proper divisors (236182014600324).

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

131212230333420 is a wasteful number, since it uses less digits than its factorization.

131212230333420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2186870505569 (or 2186870505567 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 30.

Adding to 131212230333420 its reverse (24333032212131), we get a palindrome (155545262545551).

The spelling of 131212230333420 in words is "one hundred thirty-one trillion, two hundred twelve billion, two hundred thirty million, three hundred thirty-three thousand, four hundred twenty".