131222232512 has 56 divisors (see below), whose sum is σ = 297681237504. Its totient is φ = 56221477632.

The previous prime is 131222232509. The next prime is 131222232521. The reversal of 131222232512 is 215232222131.

It is a happy number.

131222232512 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1538573 + ... + 1621619.

It is an arithmetic number, because the mean of its divisors is an integer number (5315736384).

Almost surely, 2^131222232512 is an apocalyptic number.

It is an amenable number.

131222232512 is an abundant number, since it is smaller than the sum of its proper divisors (166459004992).

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

131222232512 is an equidigital number, since it uses as much as digits as its factorization.

131222232512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86593 (or 86583 counting only the distinct ones).

The product of its digits is 2880, while the sum is 26.

Adding to 131222232512 its reverse (215232222131), we get a palindrome (346454454643).

The spelling of 131222232512 in words is "one hundred thirty-one billion, two hundred twenty-two million, two hundred thirty-two thousand, five hundred twelve".