131037220 has 12 divisors (see below), whose sum is σ = 275178204. Its totient is φ = 52414880.

The previous prime is 131037199. The next prime is 131037223. The reversal of 131037220 is 22730131.

It can be written as a sum of positive squares in 2 ways, for example, as 14915044 + 116122176 = 3862^2 + 10776^2 .

It is not an unprimeable number, because it can be changed into a prime (131037223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3275911 + ... + 3275950.

It is an arithmetic number, because the mean of its divisors is an integer number (22931517).

Almost surely, 2^131037220 is an apocalyptic number.

131037220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131037220 is an abundant number, since it is smaller than the sum of its proper divisors (144140984).

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

131037220 is a wasteful number, since it uses less digits than its factorization.

131037220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6551870 (or 6551868 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 131037220 is about 11447.1489900324. The cubic root of 131037220 is about 507.9234027979.

Adding to 131037220 its reverse (22730131), we get a palindrome (153767351).

The spelling of 131037220 in words is "one hundred thirty-one million, thirty-seven thousand, two hundred twenty".