131146812 has 36 divisors (see below), whose sum is σ = 333942336. Its totient is φ = 43394880.

The previous prime is 131146739. The next prime is 131146819. The reversal of 131146812 is 218641131.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131146819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8364 + ... + 18227.

It is an arithmetic number, because the mean of its divisors is an integer number (9276176).

Almost surely, 2^131146812 is an apocalyptic number.

131146812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131146812 is an abundant number, since it is smaller than the sum of its proper divisors (202795524).

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

131146812 is a wasteful number, since it uses less digits than its factorization.

131146812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26738 (or 26733 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 131146812 is about 11451.9348583547. The cubic root of 131146812 is about 508.0649626555.

Adding to 131146812 its reverse (218641131), we get a palindrome (349787943).

The spelling of 131146812 in words is "one hundred thirty-one million, one hundred forty-six thousand, eight hundred twelve".