131131310232 has 128 divisors (see below), whose sum is σ = 357629126400. Its totient is φ = 39825203712.

The previous prime is 131131310209. The next prime is 131131310257. The reversal of 131131310232 is 232013131131.

It is a happy number.

It is a super-2 number, since 2×131131310232² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 131131310199 and 131131310208.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44254783 + ... + 44257745.

It is an arithmetic number, because the mean of its divisors is an integer number (2793977550).

Almost surely, 2^131131310232 is an apocalyptic number.

131131310232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131131310232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178814563200).

131131310232 is an abundant number, since it is smaller than the sum of its proper divisors (226497816168).

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

131131310232 is a wasteful number, since it uses less digits than its factorization.

131131310232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4777 (or 4773 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 131131310232 its reverse (232013131131), we get a palindrome (363144441363).

The spelling of 131131310232 in words is "one hundred thirty-one billion, one hundred thirty-one million, three hundred ten thousand, two hundred thirty-two".