131043220 has 48 divisors (see below), whose sum is σ = 343099008. Its totient is φ = 40844160.

The previous prime is 131043203. The next prime is 131043229. The reversal of 131043220 is 22340131.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 131043194 and 131043203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131043229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41007 + ... + 44086.

It is an arithmetic number, because the mean of its divisors is an integer number (7147896).

Almost surely, 2^131043220 is an apocalyptic number.

131043220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131043220 is an abundant number, since it is smaller than the sum of its proper divisors (212055788).

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

131043220 is a wasteful number, since it uses less digits than its factorization.

131043220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85120 (or 85118 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 131043220 is about 11447.4110610216. The cubic root of 131043220 is about 507.9311550328.

Adding to 131043220 its reverse (22340131), we get a palindrome (153383351).

The spelling of 131043220 in words is "one hundred thirty-one million, forty-three thousand, two hundred twenty".