131212444323312 has 120 divisors (see below), whose sum is σ = 404561861905968. Its totient is φ = 39367670016000.

The previous prime is 131212444323223. The next prime is 131212444323319. The reversal of 131212444323312 is 213323444212131.

131212444323312 is a `hidden beast` number, since 1 + 3 + 1 + 2 + 12 + 4 + 4 + 4 + 323 + 312 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131212444323319) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 409919913 + ... + 410239880.

Almost surely, 2^{131212444323312} is an apocalyptic number.

131212444323312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131212444323312 is an abundant number, since it is smaller than the sum of its proper divisors (273349417582656).

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

131212444323312 is a wasteful number, since it uses less digits than its factorization.

131212444323312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 820159919 (or 820159910 counting only the distinct ones).

The product of its digits is 82944, while the sum is 36.

Adding to 131212444323312 its reverse (213323444212131), we get a palindrome (344535888535443).

The spelling of 131212444323312 in words is "one hundred thirty-one trillion, two hundred twelve billion, four hundred forty-four million, three hundred twenty-three thousand, three hundred twelve".