131213323212 has 24 divisors (see below), whose sum is σ = 306430451712. Its totient is φ = 43699770000.

The previous prime is 131213323169. The next prime is 131213323217. The reversal of 131213323212 is 212323312131.

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 (131213323217) 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, 4736164 + ... + 4763787.

It is an arithmetic number, because the mean of its divisors is an integer number (12767935488).

Almost surely, 2^131213323212 is an apocalyptic number.

131213323212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131213323212 is an abundant number, since it is smaller than the sum of its proper divisors (175217128500).

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

131213323212 is a wasteful number, since it uses less digits than its factorization.

131213323212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9501109 (or 9501107 counting only the distinct ones).

The product of its digits is 1296, while the sum is 24.

Adding to 131213323212 its reverse (212323312131), we get a palindrome (343536635343).

It can be divided in two parts, 13121 and 3323212, that added together give a palindrome (3336333).

The spelling of 131213323212 in words is "one hundred thirty-one billion, two hundred thirteen million, three hundred twenty-three thousand, two hundred twelve".